DNA is a double helix composed of nitrogenous bases, which form hydrogen bonds with each other. It also contains a deoxyribose sugar and phosphate backbone.
Answer:
It is called the Chloroplast.
Explanation:
"In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle."
I believe the answer is b
The blank is going to represent marijuana, LSD,PCP, and ecstasy. sited by google. hope that helped
<span>The scientific method is a method scientists use in studying the the world around them.
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