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Oksi-84 [34.3K]
3 years ago
11

Why do we only see four trophic levels in most food webs?

Biology
1 answer:
ASHA 777 [7]3 years ago
5 0

Answer:

Usually there's not enough energy left to support any additional levels.

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How are flowering plants and conifers alike? A.They both have incomplete flowers. bThey both make fruits. cThey both reproduce b
Sveta_85 [38]

Answer:

cThey both reproduce by means of seeds.

Explanation:

This is because both flowering plants and conifers reproduce by seeds. Although Conifers are gymnosperms, and angiosperms are flowering plants but conifers grow their seeds naked, it often appear on the scales of a cone, instead of encased in fruit. The flowering plants seeds are encased in fruits. Both conifers and flowering plants are vascular plants that is they have vascular tissues which help them conduct water and nutrients

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Vascular plants exhibit alternation of generation. What is alternation of generation?
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The correct answer to this question is this one: "C. The plant exists as a diploid organism, and at other times as a haploid." Vascular plants exhibit alternation of generation. The alternation of generation is presented as the plant exists as a diploid organism, and at other times as a haploid.<span>
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3 years ago
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How aerobic respiration and anaerobic respiration different?
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Answer and Explanation:

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6 0
4 years ago
(1744-1829) was an important French naturalist. He was one of the first scientists to propose that species change over time. ide
zalisa [80]
<h2>Jean Baptiste Lamarck</h2>

Explanation:

Jean Baptiste Lamarck (1744-1829) was an important French naturalist. He was one of the first scientists to propose that species change over time.

Jean Baptiste Lamarck published his theory of evolution in the book <em>Philosophie zoologique </em>called the theory of use and disuse or the inheritance of acquired characteristic. According to this theory, ecological conditions in which an organism lives cause it to have certain needs. These needs are met by modification of old organs or by production of new rudimentary organs.The continuous  use of the rudimentary structures allows them to increase in size and disuse causes that organ to degenerate. These changes become fix and become inheritable.

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3 years ago
As a result of its involvement in a reaction, an enzyme _____.
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As a result of its involvement in a reaction, an enzyme is unchanged.

Enzymes are catalysts that speed up chemical reactions that occur within the biological systems (they increase the reaction rate by lowering its activation energy). Enzymes react with substrate that binds to them (key-lock mechanism) and convert the substrate into the product. Most of enzymes are proteins by their structure but a few are catalytic RNA molecules-ribosymes.

Enzyme activity can be affected by other molecules (activators and repressors), pH, temperature etc.

3 0
4 years ago
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