Answer:
C
Explanation:
Over time, many species gradually adapted to a more oxygen-rich environment, allowing them to survive in shallow water and on land.
From about 4 billion years ago to about 2.5 billion years ago, oxygen gas became more common in Earth's atmosphere, but the early life forms were harmed by the gas, and later those who survived passed on their genes to the next generation through evolution.
What is the significance of oxygen in evolution?Evolution is a process that explains life's ability to adapt and change over time in response to environmental conditions and the process of evolution is one of the central mechanisms driving life's diversity, but the presence of oxygen harmed early life. As life forms evolve, oxygen becomes one of their most important gases.
Hence, from about 4 billion years ago to about 2.5 billion years ago, oxygen gas became more common in Earth's atmosphere, but the early life forms were harmed by the gas, and later those who survived passed on their genes to the next generation through evolution.
Learn more about oxygen here.
https://brainly.com/question/13370320
#SPJ6
Why do you think milk is pasteurised?
(GIVING BRAINLIEST!!)
Which of the water reservoirs contains one percent of the water on Earth?
A) Lakes, rivers, and groundwater
B) Oceans
C) Polar ice caps and glaciers
D) Oceans and groundwater
Answer:
Polar ice & glaciers
Explanation:
Just look at the grey its bigger than the orange .-.
Answer:
The answer is C
Explanation:
Sarah is finishing a model drawing of a cell. She adds a membrane to the nucleus on her model. The nucleus of a cell has a membrane that isolates
material inside of it from the rest of the cell. Why does the nucleus need a membrane?
A.
The membrane helps the nucleus to create energy for the cell.
B.
The membrane helps the nucleus to create proteins for the cell.
C.
The membranes helps the nucleus to remove waste from the cell.
D.
The membrane helps the nucleus protect genetic material for the cell.
Answer:
C
Explanation:
a nuclear membrane is a double membrane that encloses the cell nucleus. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials such as nucleic acids and proteins, between the nucleus and the cytoplasm .
why are calendar years rounded
Answer:
The differences arise because it actually takes the Earth around 365.25 days to make a full orbit. This value is rounded down for the sake of our timekeeping.
Explanation:
Construct a food chain. Place the organism in order from producer, primary consumer to secondary consumer to tertiary consumer. (An owl eats a snake, the snake eats a squirrel, the squirrel ate a nut.)
Answer:
nut is the producer the squirell the primary cosumer a snake is the secondary consumer the owl is a terriary consumer
In the given scenario, nut is producer, squirrel is primary consumer, snake is secondary consumer and owl is tertiary consumer.
What is a food chain?The food chain depicts how living things obtain food. Some animals only eat plants, while others eat other animals. The food chain is made up of four types of organisms: producers, consumers, prey, and predators.
Food chains are significant because they reveal the intricate relationships that exist in ecosystems.
They can reveal how each organism is dependent on another for survival. Food chains also show what happens when there is a problem and a producer or consumer is lost. Entire communities can be destroyed.
The nut is the producer, the squirrel is the primary consumer, the snake is the secondary consumer, and the owl is the tertiary consumer as per the given situation.
Thus, the food chain here is nut--->squirrel--->snake--->owl.
For more details regarding food chain, visit:
https://brainly.com/question/16065961
#SPJ2
Why would combining cells that result from Mitosis not work for fertilization?
Pls pls answer I need help!
Answer:
Because cells that result from mitosis are diploid i.e. contain two sets of chromosomes.
Explanation:
Mitosis is a type of cell division that produces daughter cells that are genetically identical to the parent cell. The chromosomal number of cells formed from mitosis remains the same as the parent cell. This means that if a parent is diploid (2n), the daughter cells from mitotic division will be diploid (2n).
However, for fertilization during sexual reproduction to occur, two haploid or half of the chromosome number of the parental organism must unite to form a whole diploid organism. In other words, two haploid cells (n + n) must come together in fertilization to give a diploid cell (2n). Hence, combining cells that result from mitosis would not work for fertilization because cells that result from mitosis are already diploid i.e. contain two sets of chromosomes.
Which best determines the health of a lake used as a source of freshwater?
A. its depth and width
B. its temperature and pH
C.its location and depth
D.its temperature and depth
Answer:
B
Explanation:
A measure of the natural populations of algae, plants, fish, and other wildlife provides evidence of the health of a body of water.
the concentration of solute outside of the cell are_____than the inside of the cell
What happens to a cell in a hypertonic solution
Answer:
If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ). A single animal cell ( like a red blood cell) placed in a hypotonic solution will fill up with water and then burst.
Long chain of _________________ that surrounds the Pacific Ocean.
Answer:
The Ring of Fire or also known as the Circum-Pacific Belt
Hope that helps!
Answer:
Circum-Pacific Belt
Hope it helps
Explain how mRNA is formed from the DNA template.
Answer:
mRNA is “messenger” RNA. mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template. This process requires nucleotide triphosphates as substrates and is catalyzed by the enzyme RNA polymerase II. The process of making mRNA from DNA is called transcription, and it occurs in the nucleus.
The stimulus materials discussed selecting certain traits as the basis for breeding known as artificial selection or selective breeding. How did such variations in the population of domesticated horse species Equus caballus occur?
Select one:
A. Tropism
B. Acquired traits
C. Inherited traits
D. Vestigial structures
Answer:
i wanted 5 points
Explanation:
i got 5 points
Answer:
Tropism is the correct answer to this problem i just like typing because i am a weirdo.
Explanation:
A class of organisms that harm their host by producing toxins that
interfere with normal body function.
Answer:
your answer will be bacteria
Canada has the ___ land mass in the world.
A. largest
B. 2nd largest
C. 3rd largest
2nd largest on the worls
Answer:
2nd largest, Russia is the biggo boi
Examples of Homogeneous & Heterogeneous Rocks!
(Pls help, thxs)
Answer:
mixtures of sand and water or sand and iron filings, a conglomerate rock, water and oil, a salad, trail mix, and concrete (not cement). A mixture can be determined to be homogeneous when everything is settled and equal, and the liquid, gas, the object is one color or the same form.
Explanation:
Ok, so this is what kangaroos used to look like...
Enjoy trying to sleeping tonight ;)
Answer:
Thanx
The Industrial Revolution ushered in all of the following EXCEPT:
A. Higher infant mortality rates
B. Exponential growth in the human population
C. Antibiotics and vaccinations
D. Longer life expectancies
Answer:
Option A. is correct
Explanation:
In Europe and the United States, the Industrial Revolution was the transition to new manufacturing processes that took place from the 18th to 19th centuries.
The Industrial Revolution ushered in all of the following EXCEPT Higher Infant Mortality Rates.
Causes of Industrial Revolution:
1. Emergence of capitalism
2. European imperialism
3. Capitalism
So,
Option A. is correct
Explain the connection between nitrogen-fixing bacteria and the use of
fertilizer.
Answer:
They contain symbiotic rhizobia bacteria within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants; this helps to fertilize the soil
Anyone know this one
Answer:
no so sorry I will help next time
Help me please!!!! Ill give you 30 pointssss
Answer:
The correct answer is cw333666777
Explanation:
A very important by-product of the Calvin cycle is...
A. Oxygen
B.Carbon dioxide
C. Water
Answer:
B.Carbon dioxide
Explanation:
The immediate products of one turn of the Calvin cycle are 2 glyceraldehyde-3-phosphate (G3P) molecules, 3 ADP, and 2 NADP+. (ADP and NADP+ are not really "products." They are regenerated and later used again in the Light-dependent reactions). Each G3P molecule is composed of 3 carbons.
Which greenhouse gas is generated by 95% human activity
and 5% due to natural processes?
Answer:
Carbon dioxide (CO2)
Explanation:
Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities. In 2018, CO2 accounted for about 81.3 percent of all U.S. greenhouse gas emissions from human activities.
Answer:
carbon dioxide co2
hope it helps!
Which statement best describes the nature of science?
A. A hypothesis is a correct answer to a problem.
B. Science is a body of knowledge that is subject to change based on data.
C. The nature of science is for scientists to prove their point of view as correct.
D. A hypothesis becomes a law if there is data to support the hypothesis.
ASAP!!!!
Which example describes an abiotic factor interacting with a biotic factor
A: more light increases the water Temperature
B: Small fish are food for larger fish
C: Tropical fish need warm water to survive
D: High water temperatures decrease oxygen concentration in the water
Answer:
C
Explanation:
heat is nonliving, whilst the fish is a living being. this describes a fish needing a certain temperature to it's climate to live in acceptable conditions.
Answer:
C
Explanation:
heat is nonliving, whilst the fish is a living being. this describes a fish needing a certain temperature to it's climate to live in acceptable conditions.
-
. Glucose Lactic Acid + 2 ATP
1. What is the name of this formula?
Explanation:
anaerobic respiration as per my opinion .
hope this will be helpful to you.
Which statement best summarizes why energy is necessary for organisms to grow and to survive?
A. Energy requires fuel
B. Inanimate objects require energy
C. Work requires energy
D. Energy is the ability to move or change
Answer:
A. Energy requires fuel in our case food
Explanation:
The diagram shows a Punnett square made to predict the earlobe shape of the offspring of two parents. The capital A stands for the trait of free-hanging earlobes, and the lowercase a stands for the trait of attached earlobes. Write the genotype of each offspring. What will be the phenotype of each offspring? Is the trait of free-hanging earlobes dominant or recessive? What is the expected ratio of free-hanging earlobes to attached earlobes in the offspring? \
Answer:
AA
free-hanging earlobes
Aa
free-hanging earlobes
Aa
free-hanging earlobes
aa
attached earlobes
Explanation:
The expected ratio of free-hanging earlobes to attached earlobes in the offspring of two heterozygous parents (Aa x Aa) is 3:1. This means that for every four offspring, three will have free-hanging earlobes, and one will have attached earlobes.
What is a punnett square?A Punnett square is a diagram used to predict the probability of offspring inheriting certain traits based on the genotypes of their parents. It consists of a grid with the possible gametes (sperm or egg cells) of each parent along the top and left sides.
The possible genotypes of the offspring are then filled in by combining the gametes in each box of the grid. The resulting genotypes can then be used to determine the probability of each phenotype (physical trait) appearing in the offspring. Punnett squares are commonly used in genetics to study the inheritance patterns of traits such as eye color or blood type.
Learn more about punnett square, here:
https://brainly.com/question/27984422
#SPJ2
Identify structures C and D
Answer:
C =m rna and d= dna thread
This is pretty simple I just don’t have time but you just match the definitions with the word (23 points)
1. Which layer of the atmosphere has:
a. the most water vapor?
b. the lowest pressure?
2. What remains the same in different layers of the atmosphere?
3. Scientists have divided the earth's atmosphere into different layers. What property of the atmosphere do you think these divisions are based on?
4. You collected data on four layers of the atmosphere. The atmos- phere merges into outer space in an extremely thin upper layer known as the exosphere. Which of the five layers of the atmos- phere do people live in?
Answer:
question 1- a. troposphere b. mesosphere
question 2- Earth's atmosphere is similar to a jacket for our planet. It surrounds our planet, keeps us warm, gives us oxygen to breathe, and it is where our weather happens.
question 3- temperature because Scientists divide Earth's atmosphere into four main layers classified according to changes in temperature.
question 4- Troposphere
Explanation:
1. Which of the following does NOT typically produce offspring with genetic variation?
a. Humans
b. Dogs
c. Trees
d. Bacteria
Answer:
d. Bacteria
Explanation:
They're the only creatures listed that can reproduce asexually. If something reproduces asexually, the offspring will have the same DNA as the parent unless a mutation occurs.
Hope this helps! Have a great day!
The bacteria does not typically produce offspring with genetic variation. hence, the option d is correct.
What produces offspring along with genetic variation?Se-xual reproduction does have the potential for generating the instant genetic variation in offspring. It is because of the independent assortment
Also, in humans, dogs, and trees that produced offspring with genetic variation
hence, The bacteria does not typically produce offspring with genetic variation. hence, the option d is correct.
Learn more about offspring here: https://brainly.com/question/21499942