Answer:
When the per capita rate of increase ( r) takes the same positive value regardless of the population size, then we get exponential growth. When the per capita rate of increase ( r) decreases as the population increases towards a maximum limit, then we get logistic growth.
Explanation:
Exponential population growth: When resources are unlimited, populations exhibit exponential growth, resulting in a J-shaped curve. When resources are limited, populations exhibit logistic growth. In logistic growth, population expansion decreases as resources become scarce.
what event occured during paleozoic era?
A. diversification of mammals
B. beginning of multicelled life
C. first appearance of most invertebrates
D. dominance of non avian dinosaurs
Answer:
C) first appearance of most invertebrates.
Explanation:
The Cambrian Explosion occurred 542 mya. The earliest complex animals arose in the sea at the beginning of the Cambrian Explosion. It would take another half a billion years for mammals to rise. Multicellular life dates back 1.2 bya, but more cpomplex life, such as animals, did not occur until the Cambrian Explosion. In the beginning of the Cambrian Explosion, many soft-bodied animals, such as jellyfish and sea anemones appeared.
Answer:
C
Explanation:
First appearance of most invertebrates
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Answer:
c d
Explanation:
Answer:
C.
Explanation:
The kidney and the liver removes wastes from
blood
Describe the types of mutations that occur in organisms.
Answer:
Mutations affect organisms in two different ways. Genetic mutations are inherited DNA changes that can be passed on to the next generation. Somatic mutations are DNA changes that are acquired after birth. Mutations can be helpful, harmful or make no difference at all.
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Which of the following terms describes all of the living and nonliving things
that interact in an area?
A. Ecosystem
B. Biome
C. Population
D. Community
Answer:
Ecosystem
Explanation:
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i need help with these twooooooo
Answer:
Monocytes for number (2)
Vessels is for number (3)
Explanation:
Macrophages are formed through the differentiation of monocytes, one of the major groups of white blood cells of the immune system
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Which flowchart best explains how a change in ocean temperature, such as
occurs during El Niño or La Niña, could affect weather in another part of the
world?
A. Ocean
Weather
Clouds - Wind
-
B. Coriolis effect - Atmosphere – Wind - Ocean
C. Weather
Atmosphere – Wind – Ocean
D. Ocean – Atmosphere
Atmosphere – Wind – Weather
Answer:
C
Explanation:
Becuase the weather atmostphere is the core to our weather systems
Answer:
option c is the correct answer
Which type of bond forms between water molecules?
Answer:
Hydrogen Bonds
Explanation:
✦ ✦ ✦ Beep Boop - Blu Bot! At Your Service! Scanning Question . . .
Code: Green! Letters and Variables Received! ✦ ✦ ✦
--------------------------------------------------------------------------------------------------------------Question: Which type of bond forms between water molecules?
--------------------------------------------------------------------------------------------------------------Answer: Water is polar, and the dipole bond it forms is a hydrogen bond based on the two hydrogen atoms in the molecule. Hydrogen bonds are especially strong because the hydrogen atom in molecules such as water is a small, naked proton with no inner electron shell.
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Pick one gland and one hormone and describe the effect on the body
Answer:
Pituitary Gland, and Luteinizing hormone
Explanation:
The pituitary gland is also known as the "puberty gland". It causes growth, blood pressure, and reproduction. It secretes the Luteinizing hormone which starts sexual development for everyone and controls the menstrual cycle for women.
Farmer Brown notices his tomato plants are leaning towards the front, which results in spoiling tomatoes. Briefly explain to Mr.
Brown what method he can
use prevent that from happening
Answer:
Install wood or rebar stakes at least 6 feet-tall at planting time. As the plants grow, tie the stems loosely to the stakes with twine or strips of fabric.The most common cause of leggy seedlings is lack of strong, overhead lighting. Tomato plants become long and spindly when they are reaching for the light. If the light only comes from one direction, then your seedlings not only become leggy, but will also lean towards the light.Generally speaking, in the north, tall plants such as beans, peas, and corn do best on the north side of the garden. Medium size crops such as tomatoes, cabbage, squash, pumpkins, and broccoli in the center of the garden.
Explain how cellular respiration is the opposite reaction to photosynthesis.
Answer:
Cellular Respiration and Photosynthesis are almost opposite processes because photosynthesis removes carbon dioxide from the atmosphere while cellular respiration puts back carbon dioxide. Cellular respiration uses oxygen and has it's waste product of carbon dioxide (CO2).
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Answer:
this is because during photosynthesis oxygen is released and in cellular respiration oxygen is taken in or inhalation takes place
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A slab of bare rock is covered with lichens. In time, mosses cover the rock, followed by grasses, and finally by small shrubs and tree saplings. In this example, the lichens represent
a. pioneer organisms
b. secondary consumers
c. a climax community
d. a dominant species
Answer: pioneer organisms
Explanation: they were present as the environment developed
An atom of nitrogen has seven protons in its nucleus. How many electrons does it have?
2
Answer:
7
Explanation:
amount of protons in atom is equal to amount of electons. if given neutrons, then it might be diff than protons since there are isotopes
Answer:
most probably 7
Explanation:
If it is not an ion, normally, the electron and proron numbers are equal
Which substance in chloroplasts is a green pigment that absorbs energy for
photosystems?
O A. NADPH
O B. ATP
O C. Chlorophyll
O D. Thylakoids
Answer:
C. Chlorophyll
Explanation:
Chlorophyll is the green pigment that absorbs the light energy for photosystems.
The substance in chloroplasts that is a green pigment and absorbs energy for photosystems is chlorophyll, which is present in Option C, as chlorophyll is the primary pigment responsible for the green color of most plants as it reflects green light,
What is chlorophyll?Chlorophyll is a type of pigment that is responsible for the green color of leaves, stems, and other plant parts, and it is found in the chloroplasts of plant cells, specifically in the thylakoid membranes, where it plays a central role in photosynthesis, and chlorophyll absorbs light energy from the sun. During photosynthesis, chlorophyll absorbs light energy and transfers it to other molecules in the photosystems, where it is used to generate ATP and NADPH, and these energy-rich molecules are then used in the light-independent reactions of photosynthesis to produce glucose and other organic compounds.
Hence, the substance in chloroplasts that is a green pigment and absorbs energy for photosystems is chlorophyll, which is present in Option C.
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Which process does the diagram represent
Which cells lack of nucleus ?
A. Muscle cell
B. Euglena
C. Fungal cell
D. Bacterial cell
Answer:
D. Bacterial cell
Explanation:
Decomposers are important in the environment because they
A. convert large molecules into simpler molecules that can then be recycled
B. release heat from large molecules so that the heat can be recycled through the ecosystem
C. can take in carbon dioxide and convert it into oxygen
D. convert molecules of dead organisms into permanent biotic parts of an ecosystem
Answer:
D
Explanation:
Decomposers are important in the environment because they convert molecules of dead organisms into permanent biotic parts of an ecosystem. So, the correct option is (D).
What are Decomposers?Living organisms such as micro-organisms that convert dead plants and animals into humus are known as decomposers. Fungi and bacteria fall in this category. It recycles and converts the dead matter into humus which mixes with the soil of the forest. It provides essential nutrients to the plants. It is also known as detritivores.
There are four types of decomposers, namely
FungiInsectsEarthwormBacteriaThese types of organisms decompose or break down organic matter such as the remains of dead organisms, carrying out the process of decomposition, which occurs after the death of all living organisms.
They are also called reducers because they are able to remove or degrade dead bodies of organisms and because of their small size they are known as micro consumers.
Thus, Decomposers are important in the environment because they convert molecules of dead organisms into permanent biotic parts of an ecosystem. So, the correct option is (D).
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How are a rainforest and a wetland similar?
Answer:
They are both humid and hot, but the wetlands are solely on the edge of an ocean or sea.
Explanation:
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Comparing the four most common types of power plants in Alberta (coal, natural
gas, wind, and hydroelectric), which has the lowest efficiency in electricity
generation? and why?
Answer:
Coal.
Explanation:
Steam power plant has the lowest efficiency in electricity production which can only be run with the use of fossil fuels such as coal. The efficiency of this power plant is the lowest because large amount of coal is converted into smoke and other gases and very less amount of coal into heat energy. This coal is used to produce heat energy which can be used in the heating of water to produce steam. This steam is used to move turbines which turn mechanical energy into electric energy.
A person would weigh
more on_________
than on_______
because.....
can dna replication occur without proteins
Carbon dioxide example?
Answer:
when you burn fuels like propane or wood, the creation of the burning produces things like water Carbon dioxide and other gasses.
Explanation:
burning fuels makes carbon dioxide, when we lite a campfire we release gasses and cause a chemical reaction with the air.
Answer:
when you burn fuels like propane or wood, the creation of the burning produces things like water Carbon dioxide and other gasses.
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Which of the following locations would have the slowest rate of weathering?
Amazon jungle
Hawaiian Islands
North Pole
New York City
Answer:
The correct answer is A, The Amazon Jungle
Explanation:
Which of the following is NOT essential for protein synthesis? *
ribosomes
tRNA
mRNA
carbohydrates
Answer:
carbohydrates
Explanation:
Select the correct answer.
Sea anemones are predatory Invertebrates with stinging tentacles that can paralyze many sea animals. The clownfish Is Immune to the sting of
the sea anemone and actually lives among its tentacles. The relationship is mutually beneficlal-the clownfish often lures meat-eating animals
over to the anemone, and the anemone beneflts from the meal. The clownfish often gets to eat
leftovers from the anemone's meal.
When the clown fish Is ready to lay eggs, It lays them near a sea anemone. How's this a reproductive strategy?
O A. The sea anemone protects the clownfish's eggs from predators.
O B. The sea anemone fertilizes the clownfish's eggs.
O C. The sea anemone provides nourishment for the clownfish's eggs.
O D. The sea anemone uses the clownfish's eggs to lure prey.
O E. The sea anemone lets the clownfish rest on it.
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Answer:
d
Explanation:
Can someone please help me with these two:
1. Blood is at it's highest pressure just when it leaves the heart. Why do you think so?
2. The blood in an artery flows faster and at higher pressure than blood in veins. Why so?
Answer:
1.Blood pressure can be defined as the pressure of blood on the walls of the arteries as it circulates through the body. Blood pressure is highest as its leaves the heart through the aorta and gradually decreases as it enters smaller and smaller blood vessels (arteries, arterioles, and capillaries).
2. The more rounded the lumen, the less surface area the blood encounters, and the less resistance the vessel offers. Vasoconstriction increases pressure within a vein as it does in an artery, but in veins, the increased pressure increases flow.
The molecule represented below is found in living things.
Which statement describes one characteristic of this molecule?
1.
It is the template for the replication of genetic information.
2.
Organic catalysts are made up of these molecules.
3.
It is different in each cell of an organism.
4.
Cell membranes contain many of these molecules.
The diagram of the molecule is attached with the answer.
Answer:
The correct answer is - 1. It is the template for the replication of genetic information.
Explanation:
The given molecule is a DNA molecule that is known as the molecule that takes genetic instructions in all living things and carries them to the next generation of cells.
The DNA molecule has two strands known as double helix formed by winding around one another, backbone of each strand has sugar (deoxyribose) and phosphate groups.
DNA plays a role of the template for the replication of the genetic information during DNA replication as well as transcription during protein synthesis.
Which is an example of why the process of photosynthesis is important to life on Earth?- - Grass uses photosynthesis to produce glucose, which is used within the grass for growth.
- Fungi use photosynthesis to decompose dead and decaying plant matter.
- Ectothermic animals use photosynthesis to convert sunlight into energy for cell functions.
- Green plants use photosynthesis to remove oxygen gas from the atmosphere and replenish the earth’s carbon dioxide.
Answer:
The correct answer is: A) Grass uses photosynthesis to produce glucose, which is used within the grass for growth.
Explanation:
Photosynthesis is the process by which green plants, which include algae, take in the energy from the sun and combines it with carbon dioxide (and water) to form benificial sugars.
Photosynthesis refers to the process by which the green plants, as well as algae, utilize the energy from the sun in combination with the carbon dioxide as well as water to form simple sugars. This is how the harmful gas carbion dioxide can be destroyed and elimanated.
Answer:
The answer is A
Explanation:
EA SPORTS ITS IN THE EDGE
Which type of transport is responsible for oxygen entering into blood cells?
A- Facilitated
B- Active
C- Vesicle
D- Passive
Answer:
Facilitated
Explanation:
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The diagram below represents the time a cell spends in the two main phases
of the cell cycle. Which section of the diagram represents the phase during
which the cell divides, and what is this phase called?
A. Yellow area: Interphase
B. Yellow area: M phase
C. Blue area: M phase
0 D. Blue area: Interphase
Answer:
The yellow ares is m-phase
Explanation:
This is where the cell divides into two nucleus.
The blue area in the diagram represents the phase during which the cell divides, and this phase is called the M phase or mitotic phase. Therefore, option C is the correct.
What is mitotic phase?The mitotic phase, also known as the M phase, is the phase of the cell cycle during which a single cell divides into two identical daughter cells. This process of cell division is essential for growth, development, and repair of tissues in multicellular organisms.
The M phase consists of four stages: prophase, metaphase, anaphase, and telophase. During these stages, the replicated chromosomes condense and align at the metaphase plate, separate and move towards opposite poles of the cell during anaphase, and then decondense and form two separate nuclei during telophase.
The M phase is tightly regulated by a complex network of checkpoint pathways that ensure the accurate segregation of chromosomes and prevent the formation of abnormal cells, which can lead to diseases such as cancer.
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Explain how the following events could be important in the formation of a new community of living things:
a) Fish-eating birds land on rocky islands
b) A coconut is washed up on a beach
c) An especially high tide washes seaweed onto a sandy beach
Answer:
The secondary succession.
Explanation:
It one of the ecological successions of a plant life that take place on the primary or disturbed system as the succession occurs in the preexisting soils as here the preen of the rocky island and the sandy beach is considered to be the primary succession where the coconut is washed by the high tides along with the seaweed.
The secondary succession thus starts to form with the interaction of the and beach as the coconut will continue and grow in the sandy beach as it will get nutrient and moisture firm the soil and gradually develop into a large island of coconut palm trees and thus the rocky beach will get converted to a secondary living community.