Answer:
Explanation:
What occurs is ecological succession. When an entire ecosystem is suddenly changed due to a catastrophic scenario it gets replaced by another. Other plants or animals replace the ones that got wiped out in an event such as a big forest fire or flood. Only if the place of the catastrophe somehow becomes uninhabitable another ecosystem won't come out of the old one.
3. When did reptiles first appear in the fossil
record? sc.7.E.6.4
A Early Cenozoic
B Late Cenozoic
C Early Paleozoic
D Late Paleozoic
Answer:
A
Explanation:
Reptiles arose about 310–320 million years ago during the Carboniferous period.
This is a very deep, elongated depression sometimes found bordering a continent; it forms when one plate slides
beneath another.
A.trench
B.Ditch
C.ridge
D.Mountain
Answer:
A
Explanation:
functional and structural unit of the living organism
Answer:
the cell
Explanation:
name one of the scientific principles trevor talks about when describing how the yo-yo is physics at work!! ANSWER QUICK
A scientific principle that is used in describing how the yo-yo is physics at work since it possesses energy.
The yo-yo is physics at work since it exhibits different types of force such as the angular movement, frictional force and force of gravity. The gravitational force can be found in the engine of the yo-yo. When the yo-yo is released, gravity pulls it down to the ground.Also, through the angular momentum, the object can keep spinning.
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In order to make a protein, DNA has to be unwound from the histone.
False
True
Answer:
Yes, this is true.
How does variation lead to natural selection?
Answer:
Natural selection can not create variations it can only eliminate the existing variations that are not as well adapted to the changing environment as others. Natural selection acts like a racket. Natural selection preserves variations that are best suited to environment. Variations are known to create changes within a species. These changes are also known as adaptive evolution or micro evolution.
The variations required to create changes from one species to another species have never been empirically observed. These changes are known more correctly as Darwinian evolution or macro evolution.
Variations is the driving force in evolution or change. Natural selection can only act on existing variations. So for evolution of any kind to occur there must be variations.
Why Do We Have Different Seasons
The characteristics of two methods of heat transfer are listed below
Method A: does not transfer heat to solids and requires in medium for heat transfer
Method B: Requires a material medium and transfer heat from the hot into the cold end of a solid
Witch statement is correct?
A Method A confection in method B is radiation
B method A radiation and method B is convection
C method A radiation a method B is conduction
D method A convection in method B is conduction
C.Method A radiation a method B is conduction.This statement is correct.
differentiate between arteries and veins what is the importance of capillaries in the circulatory system.
Answer:
Arteries-1.Involved in carrying pure, oxygenated blood and nutrient-rich blood.
2.Consists of three distinct layers, which are rigid, thicker and highly muscular.
3.Located deep within the body.
4.Red in colour.
5.Carry blood away from the heart to various parts of the body.
6.High pressure, as the blood flows by the pumping pressure of the heart.
7.Comparatively higher oxygen level.
8.The level of carbon dioxide is low
9.Lumina is narrow
10.Valves are absent
11.Arteries are at a greater risk of certain diseases like angina pectoris, atherosclerosis, etc.
Veins-1.Involved in carrying impure, deoxygenated blood
2.Consists of three distinct layers, which are thin and collapsible.
3.Peripherally located closer to the skin.
4.Blue in colour.
5.Carry blood towards the heart from the various parts of the body.
6.Low pressure, as the blood flows by the capillary action of the veins.
7.Comparatively low oxygen level.
8.The level of carbon dioxide is high
9.In upward direction from the body tissues to the heart.
10.Lumina is wide & Valves are present.
11.Veins are less susceptible to diseases such as varicose veins.
Though tiny, the capillaries are one of the most important parts of the circulatory system because it's through them that nutrients and oxygen are delivered to the cells. In addition, waste products such as carbon dioxide are also removed by the capillaries.
Explanation:
Hope this helps you
Crown me as brainliest:)
is a banana a fruit berry or vegetable
Answer:
Raspberries are Not. It turns out berry is actually a botanical term, not a common English one. It turns out that blackberries, mulberries, and raspberries are not berries at all, but bananas, pumpkins, avocados and cucumbers are.
Explanation:
hope it helps
Answer:
A banana is a fruit
Technically speaking, a banana is a berry since it grown on a tree in bunches, but it's mostly accepted as a fruit.
Keep this in mind: Is it has seeds, it's a fruit, if it doesn't have seeds, it's a vegetable.
Explanation:
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what is the smallest part of a compound called
Which of the following is NOT a function of receptors?
A. Receive hormone signals
B. Receive neurotransmitter signals
C. Receive glucose molecules
D. Identify cells
Answer:
The characteristic that is not a function of the receptors is to receive glucose molecules.
Explanation:
The receptors are structures made up of proteins or glycoproteins whose function is to receive specific signals, which determine intracellular changes and promote an effect or action.
Most of the receptors are located on the surface of the cells, serve for cell recognition and are capable of receiving stimuli from neurotransmitters and hormones.
Glucose is a biomolecule that does not constitute a stimulus or possess a specific receptor and enters the cell with the use of a specific transporter.
Answer:
c
Explanation:
How does the spread of an airborne pathogen compare to the spread of foodborne and person-to-person pathogens
Answer:
Airborne transmission of an illness occurs when bacteria or viruses travel on dust particles or on small respiratory droplets that may become aerosolized when people sneeze, cough, laugh, or exhale.
why are commercial greenhouses use heaters on cold days?
Answer:
Heat is often used in greenhouses and makes plant growth possible when the weather is cold outside. Increased temperatures in greenhouses increase the rate of photosynthesis. Temperature regulation is important – note that cooling may also be required.
Explanation:
1. Lines on a global map running parallel to the equator are lines of
O altitude
O longitude
O latitude
O climate
Answer:
Your answer is C) latitude.
Question #5
In which situation would water enter a cell through osmosis?
A
The cell is 20% water, and the cell's environment is 80% water.
B.
The cell is 50% water, and the cell's environment is 50% water.
С
The cell is 60% water, and the cell's environment is 40% water.
D
The cell is 80% water, and the cell's environment is 20% water.
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Answer:
D
The cell is 80% water, and the cell's environment is 20% water.
Type here to search
חו
Explanation:
The cell is 80% water, and the cell's environment is 20% water.
Type here to search
חו,
Explain why just protecting a species like the grizzly bear with a law may not be enough to conserve this species?
Answer:
When laws are made to protect a species, it is made to stop human interference. Often natural factors also are the reason for a species decline, some of these factors may include, habitat change, climate change and may also be a disease going through the species. In order to truly save a species you would have to isolate them in an area and make sure they are all healthy and the habitat does not change. The only issue with that is, they could lose some of their natural instincts such as hunting or being scared of humans. So a law may not be enough to save a species because there may also be many natural factors interfering with a species survival.
Explanation:
Five little boys have been raped and killed in the past three weeks. All of them have died due to strangulation with a rope. There were no other person's fingerprints or body fluids on the bodies. The boys all lived in an area of Memorial Drive in Dekalb County. The police fear the killer will attack again. What specialist is needed to find or identify the killer and predict where he might strike next? Why?
Answer:
Forensic biologist
Explanation:
The specialist needed to find or identify the killer would be a forensic biologist. A forensic biologist uses trace samples or evidence in identifying victims and/or suspects and generally supporting criminal investigations with the aid of scientific techniques. In the case described in the question, there are other samples (aside from body fluids and fingerprints) that can be obtained from the crime scene; for example, in the case of a struggle with the killer, some of the boys could have pulled hair strands from the killer. The root of these hair-strand can be subjected to DNA analysis to identify the killer. There is also the possibility of having one of the boys scratching some skin cells from the killer; these could also be useful in DNA analysis.
The forensic biologist could also determine when and where the actual death of the boys took place, this information could be vital for the law enforcement in predicting where the killer might strike.
Do animal cells have a nucleus ?
Answer:
Yes, animal cells do have a nucleus. If you were to look at the cell structure of an animal, you would see that they do indeed have a nucleus, with somewhat small vacuoles and other cell parts that humans and plants have. Animals do not have cell walls or chloroplasts like plants because they don't need those structures to function.
#teamtrees #WAP (Water And Plant)
Where do each type of archaebacteria live?
Answer: volcanic vents or at the bottom of the sea
Explanation:
Which statement below is correct
Photosynthesis produces ATP, and cellular respiration requires light energy.
Photosynthesis produces carbon dioxide, and cellular respiration produces sugars.
Photosynthesis and cellular respiration occur in both plant and animal cells.
Photosynthesis produces the oxygen required for cellular respiration.
Photosynthesis and cellular respiration occur in both plant and animal cells.
bonds that form between water molecules are called _____ bonds.
need help on this
what does sexual selection mean
Answer:
natural selection arising through preference by one sex for certain characteristics in individuals of the other sex.
Explanation:
Which is most likely a physical change?
cutting a substance into four pieces
burning a substance into ash and smoke
reacting a substance chemically to form a new substance
combining a substance with water to make rust
Given what we know, we can confirm that a physical change would be slicing the substance into four pieces, option A is correct.
Why is slicing the substance a physical change?This has to do with the fact that this option focuses on the physical characteristics of the substance, such as the shape and size, whereas the other options would in one way or another affect its chemical nature, by reacting with fire, chemicals, or water respectively.
Therefore, we can confirm that a physical change would be slicing the substance into four pieces.
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Answer:
A. cutting a substance into four pieces
Explanation:
Why don't siblings look exactly alike?
Accualy some do, but that's a little rare, so I'm guessing because each child gets some of there mom and dad's to genetics, one child might get some of there mom's but more of there dad's and the other might get some of there dad's and more or there mom's..? not sure if that makes any sense-
Combining simple substances into complex
substances during the process known as...
a. Excretion
b.Cell Respiration
c. Synthesis
d. Transport
Answer:
C) Synthesis
Explanation:
Synthesis: Combining simple substances into complex substances
In other words, combine small molecules to make big molecules
The presence or absence of freckles is determined by one gene. The allele for freckles (F) is dominant and the allele for the absence of freckles (f) is recessive. A couple has several children. All of the children have freckles because their parents' genotypes can only produce children with freckles. Which of these are most likely the genotypes of the two parents?
Answer:
There are no options to this question, however, the question can be answered. The answer is:
FF and FF/Ff
Explanation:
This question involves a single gene coding for possession or not of freckles in humans. The allele for freckles (F) is dominant over the allele for no freckles (f). This means that genotypes FF and Ff (heterozygous) will possess freckles while only genotype ff will not.
According to this question, a couple has several children in which all of the children have freckles i.e. have either genotype FF or Ff. This is as a result of the fact that the parent's genotypes were either FF or Ff. That is, one parent is FF while the other is either FF or Ff. This genotypes will only produce children with freckles.
A fir tree has leaves that stay green all year long. These trees produce cones, and their reproductive structures can be dispersed by the wind. To which group does the fir tree belong? nonvascular plants angiosperms gymnosperms seedless plants
Answer:
gymnosperms
Explanation:
Gymnosperms are a diverse group of plant, second to angiosperms, that both belong to the HIGHER PLANTS category. Gymnosperms are characterized by their ability to bear seeds on naked structures called CONES. They do not produce flowers or fruits as opposed to gymnosperms.
They are usually evergreen i.e. do not shed their leaves all season long. According to this question describing a fir tree, which has leaves that stay green all year long and produce cones, that allows for wind dispersal, the fir tree is a GYMNOSPERM.
Answer:
gymnosperms
Explanation:
just took it on Edge :) hope it helps
Which process can produce the most energy for a cell? *
Answer: respiration
Explanation:
The temperature of ice water is lower than the temperature of dry ice in alcohol?
True or false
Answer:
At really high pressures, carbon dioxide does form a liquid phase. Anyway, dry ice is much, much colder because carbon dioxide freezes at a lower temperature:-79 degrees Celsius or -109 degrees Fahrenheit!
Explanation:
i think its true.