1. How has the Exxon Valdez oil spill
impacted the environment?
Answer:
The oil killed and injured seabirds, sea otters, harbor seals, bald eagles, orcas and other wildlife. Eventually, oil from the spill affected more than 1,000 miles of Alaska's remote and rugged coastline.
Other Info That Might Help:
Image result for How has the Exxon Valdez oil spill impacted the environment? Environmental And Economic Impacts Prince William Sound had been a pristine wilderness before the spill. The Exxon Valdez disaster dramatically changed all of that, taking a major toll on wildlife. It killed an estimated 250,000 sea birds, 3,000 otters, 300 seals, 250 bald eagles and 22 killer whales.
Explanation:
I have answered This before and I got it right.
Hope this helps! :)
which division of the nervous system controls the radial muscles of the eye?
Answer:
sympathetic.
Explanation:
Identify the phases of mitosis during which sister chromatids are no longer attached by a centromere.(1 point)
prophase and telophase
anaphase and telophase
prophase and anaphase
metaphase and anaphase
Answer:
anaphase and telophase
Answer: Anaphase and telophase
Explanation:
The first two steps (prophase and metaphase) are the phases of detachment of the centromere.
Then the last 2 phases, are the ones with out the centromere.
!! Hope that helps !!
What controls basic functions such as breathing, heart rate, and pulse?
A.cell body
B.spinal cord
C.frontal lobe
D.brain stem
Identify the answer choice that correctly orders the types of cells from least to most differentiated.(1 point)
neuron → multipotent stem cells → pluripotent stem cells → totipotent stem cells
totipotent stem cells → multipotent stem cells → pluripotent stem cells → neuron
totipotent stem cells → pluripotent stem cells → multipotent stem cells → neuron
multipotent stem cells → totipotent stem cells → pluripotent stem cells → neuron
Answer:
totipotent stem cells → pluripotent stem cells → multipotent stem cells → neuron.
Answer:
Option 3.
totipotent stem cells → pluripotent stem cells → multipotent stem cells → neuron
Explanation:
The development of the various stages of stem cells in the embryonic stage is described here:Totipotent stem cells: Right after the mitosis of the zygote which results in the formation of two identical daughter cells, which are totipotent stem cells. Totipotent stem cells possess the ability to give rise to 220 different types of cells in the embryo including the placenta.Pluriopotent stem cells: These types of cells possess the ability to change into any type of cell in the body like blood, muscle, etc. It is formed at the embryonic stem cell stage.Multipotent stem cells: These stem cells have the ability to change into specialized cell such as forming different organs in the body. It occurs as the pluriopotent cell develops in the embryo.Neuron: As the multipotent cell has the ability to form a specialised cell it gives rise to the heart, lungs, liver, etc. including neurons.for more information:
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Which types of species tend to dominate river ecosystems.
Answer:
fish species
Explanation:
What are the parts of a leaf (plant cell) involved in photosynthesis?
How to find number of alleles present in a population.
Answer:
Count how many times the allele appears.
Explanation:
Dividing also becomes part of it.
Istanding Laws, Theories, and Hypotheses
Question 5 of 10
What does it mean that evolution by natural selection is a theory?
A. Evolution by natural selection is an educated guess about how
organisms have changed over time.
B. The results of many different studies suggest natural selection as
a common explanation of how organisms have changed over time.
C. Darwin presented this new idea, which other scientists found
useful.
D. Evolution by natural selection explains how and why organisms
have changed over time.
SUBMIT
Answer:
c
Explanation:
Explanation:
In the theory of natural selection, organisms produce more offspring than are able to survive in their environment. ... This means that if an environment changes, the traits that enhance survival in that environment will also gradually change, or evolve
What caused the formation of the moons layer
Answer:
when an object smashed into early Earth. .Explanation: no explanation just the answer
What organisms does lactic acid fermentation occur in.
Answer:
It occurs in Yogurt Bacteria
please help asap asap asap
Answer:
true
Explanation:
because it's helps the sunlight
Explain why there are substances on earth then are listed on the periodic table of elements
Answer:
Elements are pure substances with only one type of atom
Explanation:
Elements are pure substances with only one type of atom
Answer:
There are more substances on Earth than are listed on the periodic table of elements because substances are combinations of the elements. Elements are pure substances with only one type of atom. When two or more elements are combined, compounds are formed. This allows more substances to be created on Earth.
Explanation:
What are biological associations
Answer:
In ecology, a biological interaction is the effect that a pair of organisms living together in a community have on each other. They can be either of the same species (intraspecific interactions), or of different species (interspecific interactions).
Explanation:
pa brainliest
damage to the sinoatrial node in humans would ________.
Answer:
have a decrease in blood pressure
Explanation:
hope it helped<3
mark brainlliest
Damage to the sinoatrial node in humans can result in irregular heartbeats, abnormal heart rhythms, decreased cardiac output, and an increased risk of sudden cardiac arrest. Prompt medical evaluation and appropriate treatment are crucial to manage these effects and maintain a healthy heart rhythm.
Damage to the sinoatrial (SA) node in humans would result in disruptions to the normal electrical conduction system of the heart. The SA node is often referred to as the "natural pacemaker" of the heart because it initiates the electrical impulses that regulate the heartbeat. Here's how damage to the SA node would affect the heart:
1. Irregular Heartbeat: The SA node is responsible for setting the pace of the heartbeat. If it is damaged, the heart may beat too fast, too slow, or irregularly. This can lead to symptoms like palpitations, dizziness, and shortness of breath.
2. Abnormal Heart Rhythms: Without the SA node functioning properly, other areas of the heart may take over the role of generating electrical impulses. However, these impulses may not be coordinated or synchronized, resulting in abnormal heart rhythms such as atrial fibrillation or heart block.
3. Decreased Cardiac Output: The SA node helps regulate the timing of the heart's contractions, ensuring efficient blood flow throughout the body. Damage to the SA node can disrupt this coordination, leading to decreased cardiac output. This means that the heart may not be able to pump enough blood to meet the body's needs, resulting in symptoms like fatigue and weakness.
4. Risk of Sudden Cardiac Arrest: In severe cases, damage to the SA node can increase the risk of sudden cardiac arrest. Without the SA node's ability to regulate the heartbeat, the heart may stop pumping blood effectively, leading to a life-threatening emergency.
5. Treatment Options: Treatment for damage to the SA node depends on the severity and symptoms. In some cases, medication or cardiac devices like pacemakers may be used to regulate the heart's rhythm and ensure proper electrical conduction.
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Which of the following statements is characteristic of proteins?
Answer:
c. Proteins are the building blocks of the body.
Explanation: is correct
Colchicine is a toxin that binds to tubulin proteins and prevents microtubules from elongating. What effect might this have on dividing cells
The effect Colchicine might have on dividing cells is that the duplicated chromosomes might not be able to segregate into daughter nuclei.
Colchicine is an alkaloid that attaches to tubulin and prevents it from polymerization to microtubules. As we know that Microtubules are a component of the cytoskeleton of a cell that aids in molecular mobility inside the cell.
During cell division, chromatin condenses into chromosomes, which are then connected to microtubules. The chromosomes are separated into daughter cells by microtubules.
When these cells are treated with colchicine, tubulin polymerization to microtubules may not occur, and the chromosomes containing daughter nucleic might not be separated.
Learn more about chromosomes here:
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What is meant by a biological system
Biological System - A biological system is a group of entities or organs that interact to complete a task. It's a biological unit that makes up a body or an organism.
Hope this helps!!
Dr. Martino's lab has been able to demonstrate that if they excessively stimulate a postsynaptic cell, it causes it to release a _____ transmitter that travels back to the presynaptic cell and modifies it.
Why doesn't facilitated
diffusion require energy from
the cell?
A. The protein channels provide the
energy required.
B. Facilitated diffusion does require
energy
C. The movement is from a high
concentration to a lower concentration.
in
lightly
Answer: C
Explanation: This is right because the movement reciares a cell in order to move
Answer: it's C for sure!
Explanation:
saliva contains relatively few microbes compared to other body sites, because __________.
Saliva contains relatively few microbes compared to other body sites, because the concentration of antimicrobial enzymes limits their growth.
What two types of organic molecules make up carbohydrates?
Answer:
carbon and hydrogen
Explanation:
Have a nice day
Which of the following statements about weather patterns near mountain ranges is correct?
a. The leeward side of a mountain range tends to be wetter than the windward side.
b. The windward side of a mountain range tends to be wetter than the leeward side.
c. There is more cloud cover on the leeward side.
d. More vegetation grows on the leeward side than the windward side.
B.the windward side of a mountain range tends to to wetter than the forward side
Given the number of blood vessels in the retina, why do you suppose that you are not able to see them normally
Answer:
You can't see the blood vessels themselves because vision depends on a process that makes it impossible to see things that are stationary with respect to the retina. Light receptors in the retina respond only to changes in light reaching them, not to a steady image.
Have a great day! :D
The diagram displays a box of normal DNA. The second box displays mutated DNA. Compare the mutated DNA with the normal DNA and identify the type of mutation that has occurred.
A) Substitution mutation.
B) Chromosomal mutation.
C) Deletion mutation
D) Frameshift mutation.
which process is response for gas exchange in the lungs
Answer:
Diffusion is the spontaneous movement of gases,Explanation:
Answer:
External respiration
Explanation:
What is a isotonic solution? How does it affect a red blood cell?
What is a hypertonic solution? How does it affect a red blood cell?
What is a hypotonic solution? How does it affect a red blood cell?
Answer plz!
Answer: If you place an animal or a plant cell in a hypertonic solution, the cell shrinks
Explanation: 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.
is these correct? ....
Answer:
The first one is correct
Explanation:
Where are you most likely to find ocean water with a high level of dissolved
gases?
A. Mid-latitudes in the Pacific Ocean
B. Near the equator in the Atlantic Ocean
C. Near the equator in the Pacific Ocean
D. Near the polar regions
HELP ITS DUE SOON
Seawater has many different gases dissolved in it, specially nitrogen, carbon dioxide and oxygen. It exchanges these gases with the atmosphere to keep a balance between the ocean and the atmosphere.
What is atmosphere?An atmosphere is defined as the layers of gases surrounding a planet or other celestial body. Earth's atmosphere is comprises of about 78% nitrogen, 21% oxygen, and 1% other gases.
Dissolved oxygen and carbon dioxide are important for marine life. Marine plants use dissolved carbon dioxide, sunlight and water to make carbohydrates through the process of photosynthesis.
Cold water holds more gas than warm water and seawater with low salinity holds more gas than high salinity water. Deep water, that has a high pressure, holds more gas than shallow water.
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Based on figure 2-2, how many electrons does an atom of Aluminum contain? (assume all atoms are neutral)
Answer:
see exp.
Explanation:
Aluminum has 13 electrons in a neutral atom. The 1S2, 2S2 and 2P6 shells are full, and so is the 3S2. The 3P1 shell has one electron in it (in Al's neutral atom) and that gives aluminum one lone valence electron and two "semi-valence" electrons which can be loaned out. :D
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