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Allisa [31]
2 years ago
5

Help me plz I dont know this

Biology
1 answer:
Korvikt [17]2 years ago
6 0
1. Producers have the most energy in the pyramid.
2. Tertiary Consumers have the least energy (top one)
3. The importance of decomposers in the ecosystem is breaking dead animals down and turning non living things into nutrients. These nutrients make the soil better helping plants grow.
4. 900 kcal
5. Another name for producer is autotroph.
6. The amount of energy for a primary consumer is 9,000 kcal.

good luck :)
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Which best describes how blood pressure is measured and why it is important?
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Answer:

A) Blood pressure measures pressure on the arteries and can be an indicator of an unhealthy cardiovascular system.

Explanation:

Blood pressure is the amount of pressure that the blood puts on the arteries as it flows through them.

6 0
3 years ago
Coin tosses can demonstrate the effects of genetic drift. Imagine that heads and tails are two alleles in a population. Consider
nydimaria [60]

Answer:

Smaller populations have a greater chance of having one allele expressed disproportionately.

Explanation:

Genetic drift corresponds to a drastic casual alteration of the natural order, reaching the genotypic concentration of one or several species, not preliminarily involving natural selection factors, but caused by sudden events.  Such phenomenon is characterized by the occurrence of ecological catastrophes, for example: earthquakes, tsunamis, tornadoes, floods, burnings, avalanches and other processes, affecting a large population contingent. Thus limiting the genetic content of a particular group, restricted to the prevailing individuals.

In this situation, with low variability, differentiated individuals will experience a more significant selection pressure in relation to the ascending lineage, which minimized the achievements of selection due to the high number of living individuals. In this scenario, smaller populations will have a greater chance of having a disproportionately expressed allele as the number of members is reduced. We can also see this effect if by using a coin we imagine that heads and tails are two alleles in a population and each coin toss represents one member of that population.

4 0
2 years ago
What characteristic do all protists have in common?
Ivahew [28]

Answer:

(C)cell nuclei that contain DNA

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They are eukaryotic, which means they have a nucleus. Most have mitochondria. They can be parasites. They all prefer aquatic or moist environments.

4 0
3 years ago
Read 2 more answers
Which of the following statements about amphibians is true? A. Amphibians are represented by about 500 species of frogs, toads,
GenaCL600 [577]

Answer:

B. Populations of amphibians in a few local areas have declined dramatically in the last few decades

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The continuous, low-level extinction of species that has occurred throughout  the World and at least six species of frogs have not been seen for one to three decades and also it has recently been discovered that some species of salamander-specific chytrid has gone into extinction

7 0
2 years ago
Please help
lara [203]
Answer is D. 

you can learn A,B, and C from examining fossils
3 0
3 years ago
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