The diagram shows a nucleic acid in the shape of a helix. A D N A strand in the shape of a helix is shown.

Which sugar is present in the nucleic acid that is represented in the diagram?
uracil
thymine
deoxyribose
ribose

Biomass can be used to generate electricity. biomass relies heavily on agricultural crops. plants release carbon dioxide and water in combustion. plants use photosynthesis to originally generate the energy that is needed. the chemical energy of these plants all started with what energy source?

Research cheetahs on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? -cheetah how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion