In 2013, how much energy used by the human population came from renewable resources?

2. if scientists identify an animal with bilateral symmetry and no segmentation, which phylum can it definitely not belong to? a. roundworms b. annelids c. mollusks d. flatworms

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Why is it incorrect to say that mitochondria function only as energy factories with cell