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I am Lyosha [343]
3 years ago
11

What molecules make up the steps of the DNA ladder?

Biology
1 answer:
enot [183]3 years ago
7 0

The four nitrogen bases (Thymine, Adenine, Cytosine, and Guanine) with hydrogen bonding in between.

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Answer:

Biodiversity is a variation of organisms (plants, animals and bacteria) in the world or a specific habitat. Biodiversity helps to keep an ecosystem healthy because there is more variation of food and different organisms can rely on each other for survival. Also it offers a larger more reliable food chain and if one species is suddenly wiped out, it won't impact the ecosystem as much as it would if the biodiversity was smaller.

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What word or phrase would be most appropriate opposite "commensalism" under "organism 2"?
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The best phrase will be; 
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