Consider the diagram of the basic structure of a bacterium.
Which of the labeled structures in the image allows bacteria to exchange genetic material and thus evolve to be better
pathogens?
A
B
C
D

typically, most spiders possess eight eyes. however, others have as many as 12, and some don't have any. these eyes are for detecting light from dark, deciphering shapes and for gathering their prey.

the answer is b: 1.4 km/hr

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.