A virus is a nonliving thing, therefore it needs which of
the following to be able to
reproduce?
A. a nonliving parasite
B. nothing at all
C. a living host
D. a special type of
plant

As a result of these processes the single celled organism accomplishes

Which chemical reaction shows photosynthesis? a. water + carbon dioxide + sunlight → oxygen + glucose b. carbon + oxygen → carbon dioxide c. hydrogen + oxygen → water d. nitrogen + hydrogen → ammonia

In some flowers there are two alleles for color, and these can both be expressed equally at the same time. which best describes this trait? a. dominant b. sex-linked. c. codominant d. asexual