Answer:
F. The genes for black hair were activated by specific temperatures
Explanation:
The white hair only grows in cold temperatures. Just because they put an ice pack on the rabbit does not mean that its cold.
Caused by sexual contact are more difficult to treat..
You didn't put any answers, but probably environmental groups.
The double chain in the unsaturated fatty acid cause it to bent; unlike saturated fatty acid which has no double bond, is straight.