What happens when the circulatory system fails

Why does using zebrafish as a model organism for genetic testing bring up ethical concerns? As invertebrates, they have more genes than other animals. As vertebrates, they are similar to humans. As an endangered species, they need to be protected.

There are some similarities between prokaryotic and eukaryotic cells. Which structures is found in both prokaryotic and eukaryotic cells?

Which statement below correctly explains what happens to cells embryo develops

20. What factors can limit the usefulness of television news as a source of information on environmental issues? a. News reports are brief. b. News reports may leave out information c. The information comes from only one source. d.

can you name some seed of pulses and cereals

Explain how organisms contribute to fossil fuels.

Organisms that break down complex compounds and dead tissue are

Which is an example of dehydration synthesis? A.) DNA synthesis from nucleotides B.) conversion of proteins into its amino acids C.) conversion of lipids into fatty acids

Making chemical energy from light energy is called cellular respiration. True or false

True or false, in the water molecule, electrons are equally shared by hydrogen atoms and oxygen atoms