Which describes primary succession, but not secondary succession?
a. Small trees and shrubs replace grasses and other small plants.
b. Large trees replace small trees and shrubs.
c. The process often begins on lifeless, barren rocks that form from a
volcanic eruption
d. The process often begins after a human disturbance, such as clear-cutting a
forest
Answer:
C
Explanation:
Answer:
Which disturbance would result in primary succession?
harvesting wheat by using a combine harvester at the end of the growing season
controlled burning to stimulate the growth of forest trees such as sequoia
the formation of Surtsey, a volcanic island off of the southern coast of Iceland **
the effect of a large herd of elephants on the grasses and shrubs in an area
Explanation:
what would happen to a freshwater fish in the ocean ?
The fish would fill with water and die, through osmosis.
how does economics affect conservation?
Which of the following is true of the Celsius scale A.) 212° is the boiling point of water b.) 0° is absolute zero c.) 0 degrees is the freezing point of water or D .) 32° is the freezing point of water
Answer:
The correct answer is C., or ¨0 degrees is the freezing point of water¨.
0 degrees is the freezing point of water is true about the Celsius Scale. Therefore, option (C) is correct.
Water freezes at "zero degrees" on the Celsius scale. Under ordinary climatic conditions, water's freezing point is 0 degrees Celsius and its boiling point is 100 degrees Celsius. Many countries use this scale to measure temperature.
However, the Fahrenheit scale, used mostly in the US, has different freezing and boiling points for water. Water freezes at 32 degrees Fahrenheit and boils at 212. Therefore, option (C) 0 degrees is the freezing point of water is correct.
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Write a one sentence summary about viruses .
Answer:
A virus is a non-living structure that reproduces by infecting live cells (In any living organism be it a plant or animal) and killing them to spread more viruses around to other live cells, repeating the cycle of a virus.
can someone give me these answers please?
Answer: ok
Explanation:
22.-26 Fill in the blank. The Cell Theory states:
All
things are composed of
are the basic unit of structure and
in living things.
New cells are created from
Answer:
1.living things
2.cell
3.cell
4.function
5.pre existing cell
Explanation:
Why don't solids, liquids, and gases leave Earth's atmosphere?
Only gases can leave the atmosphere.
O Matter on Earth is destroyed and recycled.
O Gravity keeps all matter on Earth.
Explain the contribution of antigenic determinant in false negative and false positive tests
Answer:
Contribution of antigenic determinant in false negative -: Popular causes of false-positive ELISA include: flu vaccine administration, presence of HLA-DR antibodies in women with multigravity, presence of rheumatoid factor. Contribution of antigenic determinant in false positive tests -: Positive RPR exam, hypergammaglobulinemia and autoimmune hepatitis (e.g. multiple myeloma).Explanation:
Much attention has been paid to the specificity and sensitivity of this assay since regular ELISA screening of blood donors for anti-HIV antibodies was implemented. It was found that inadequate coating of the microtitre plates with HIV-antigen could lead to false negative results. It is important that the ELISA test kit manufacturers use control systems that guarantee adequate antigen coating.
THIS IS EARTH SCIENCES
If -----------are spaced closely together on a map, there is a drastic temperature change over a distance.
A. Isobars
B. Warm fronts
C. Isotherms
s D. Occluded fronts
Answer:
B:warm fronts
Explanation:
It is warm fronts because the closer it is the warmer it is and the farther it is colder.
this is a bag that churns up the food. it contains gastric juice and hydrochloric acid. gastric juices contains an enzyme that digests protein. the acid kills germs
Answer:
Stomach
Explanation:Seems like what you are describing is the stomach. It's the first stage of digestion and uses pepsin an enzyme that digest protein. There's also stomach muscles that move the food around.
Answer:
stoumic
Explanation:
Which correctly shows the order of organization when dealing with populations and ecosystems?
A. Organism-Species-Population-Community-Ecosystem-Biome
B. Organism-Species-Community-Population-Ecosystem-Biome
C. Species-Organism-Population-Community-Biome-Ecosystem
D. Organism-Population-Species-Community-Ecosystem-Biome
Answer:
hope this helps
Explanation:
Which of the following statements about the action potentials in contractile myocardial cells (cardiac muscle) is INCORRECT? Compared to skeletal muscle cells, contractile myocardial cells have a lower (more negative) resting membrane potential. Action potentials are propagated between adjacent cardiomyocytes through gap junctions. The duration of an action potential in a contractile myocardial cell is greater than the duration of an action potential in a typical neuron. During the repolarization phase of a contractile myocardial action potential, the cell is highly permeable to sodium, potassium and calcium.
Answer: During the repolarization phase of a contractile myocardial action potential, the cell is highly permeable to sodium, potassium and calcium.
Explanation:
Apart from the fact that contractile cells conduct impulses, it also helps in contractions which are needed for pumping of blood. It should also be noted that the myocardial conducting cells serves as the heart's conduction system. They also have a lower resting membrane potential.
Of the options given, the answer is the last option i.e. during the repolarization phase of a contractile myocardial action potential, the cell is highly permeable to sodium, potassium and calcium. This is wrong.
Repolarization occurs due to a rise in the permeability of potassium and during repolarization, the calcium channels close.
Over millions of years silt washed into a lake formed layers of sedimentary rock. What type of rock was likely formedscien
PLEASE HELP- Soon
If an impatiens flower experiences drought, then its leaves curl up and wilt as a response to water loss and as a means to reduce evaporation (water loss from the leaves).
What is the independent variable ?
What is the dependent variable ?
7. Why are adult sponges said to be sessile animals? |
Answer:
All adult sponges are sessile, meaning they are attached to some surface. Since they cannot move, sponges cannot pursue their food. Instead, they are filter feeders, meaning they obtain their food by straining the water for small bits of food like bacteria, algae, or protozoans.
Explanation:
Amnesia is a physical disorder that affects the brain. Which statement best explains why amnesia may also be
considered a psychological disorder?
O it can affect personality
O it reduces brain function
O it can be caused by trauma
o it interferes with motor skills
Answer:
It can be caused by trauma
Explanation:
Dissociative amnesia has been linked to overwhelming stress, which may be caused by traumatic events such as war, abuse, accidents, or disasters. The person may have suffered the trauma or just witnessed it.
Answer:
The correct answer is A, it can affect personality
Explanation:
Just took the test and this was the right answer. Hope this helps!
What climate zone has high annual temperatures and a small yearly temperature range
Answer:
A tropical monsoon climate
Explanation:
tropical monsoon climate as having small annual temperature ranges, high temperatures, and plentiful precipitation. This climate also has a short dry season which occurs in the winter.
The climate zone has high annual temperatures and a small yearly temperature range in tropical monsoon climates.
Tropical monsoon weather:As having small annual temperature ranges, excessive temperatures, and considerable precipitation. This weather also has a short dry season which almost usually occurs within the winter.
What are the features of tropical monsoon climate?In the tropical monsoon types of climate, there are dry seasons with low rainfall. as an instance in India, summers, and winters are dry with the simplest little rainfall. while northern parts of u. s. a . get hold of little rainfall at some stage in the summer season due to cyclonic melancholy, Tamil Nadu receives rainfall all through winters.
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Which best explains how scientists confirmed that the moon formed around the same time as Earth?
Scientists determined the approximate age of fossils from the moon and Earth.
Scientists used radioactive dating to study the age of material from the moon and Earth.
Scientists explored the cycle of condensation and evaporation over time on the moon and Earth.
Scientists analyzed the content of gases that were part of the atmospheres on the moon and Earth.
Answer:
B.
Explanation:
I Took The Test
The statement 'scientists used radioactive dating to study the age of material from the moon and Earth' best explains how scientists confirmed that the moon formed around the same time as Earth.
What is radioactive dating?Radioactive dating is a well-known technique used to date the age of specific rocks (in this case, moon rocks).
Radioactive dating uses the average life of radioactive isotopes to determine the age of a particular rock.
Radioactive isotopes used in radioactive dating may include, among others, Carbon-14 and Hydrogen-3 (tritium).
In conclusion, the statement 'scientists used radioactive dating to study the age of material from the moon and Earth' best explains how scientists confirmed that the moon formed around the same time as Earth.
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Runners only have enough stored ATP in their muscle cells to run for about five seconds. Which answer correctly explains how the runner's body adjusts to the longer distance, for example, a marathon (42.1 km)?
Answer Options:
A: The runner's body will convert stored fat molecules into energy.
B: The runner's body will create the needed energy by breaking down proteins.
C: The runner's body will supply the needed energy by producing starch.
D: The runner's body will produce the energy by activating the Golgi apparatus.
Answer:
A: The runner's body will convert stored fat molecules into energy.
Explanation:
When the body needs energy to power cells, it uses ATP. ATP is generated by cellular respiration, which involves the breakdown of (usually) sugars by aerobic respiration.
If you exercise for a longer period such as during long distance running, your body will use more fat and less glucose in an attempt to conserve the limited glucose stores in case exercise intensity increases and oxygen availability is is reduced.
The runner's body will convert stored fat molecules into energy.
Many people equate high self-esteem with
Earth is currently in a state of climate change because average global temperatures are slowly but steadily increasing. If this trend continues, what changes would you expect to see in the cicada life cycle? Use information from the article to support your argument
Answer: Cicadas will emerge from underground earlier in the year. Based on current patterns, they emerge earlier in the south than in the north because it’s warmer in the south, so the soil warms sooner. If global temperatures increase around the world, cicadas will emerge from the ground in all areas earlier than expected.
I hope this helps :)
What happens to enzymes during digestion/when it comes into contact with our stomach acids? Not our enzymes, but the enzymes in the food.
Which of the following professionals would be hired to examine a manufacturing site and review certifications and
permits?
O environmental lawyer
O environmental policy maker
O environmental resource managers
environmental compliance specialist
environmental compliance specialist
In the planetary model, electrons
A)do not exist
B)are shown in a cloud
C)have positive charges
D)orbit the nucleus like the planets orbit the sun
Answer:
Orbit the nucleus
Explanation:
Wikipedia
A chemical that binds to a receptor with the channel directly on it is a(n _____ ?
According to the passage, what is one way that people prepare for a tornado?
Answer: There is no passage to read but some ways people can prepare for a tornado are by going to a basement or inside room with no windows and covering their body with something sturdy like a desk if not available you can also use blankets
Explanation:
Look at the energy pyramid shown below.
Tertiary Consumers
(ex: hawk)
Secondary Consumers
(ex: snake)
Primary Consumers
(ex: grasshopper)
Producers
(ex: grass)
If a pesticide is released into the environment that kills most of the grasshoppers, which of the following is most likely to occur?
OA.
an increase in population for all organisms
ОВ.
a decrease in the number of snakes
C
an increase in the number of hawks
D
a decrease in the amount of grass
Answer:
It should be A. If the pesticide is released, then they die, and the consumers of the grasshopper (snake) dies due to no grasshoppers, then the animal that consumes the other animal (hawk eats snake) that eats the grasshopper will die because there aren't enough of that animal for it to eat. the only thing that lives is the grass.
Sorry if I'm wrong, but i hope it helps.
Answer:
It's actually B, "a decrease in the number of snakes"
Explanation:
If you apply a 50 pound bag of a 15-5-12 fertilizer, how much potassium is
in the fertilizer?
A. 5%
B. 15 pounds
C. 12%
D. 12 pounds
NEED HELP ASAP PLEASE
Answer:
c 12
Explanation:
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Spartina, shown here, is a plant that grows along the South Carolina coast. it’s roots are often submerged in brackish water ( mixture of fresh and salt water ) as the tide rolls in and out along the shore
Answer:
D
Explanation:
How does energy control the loss of water to a hypertonic enviorment to avoid dehydration?