Number one is C and number two is A
<span>One way social behavior increases survival in humans is the increased security from attackers
and other physical threats. Another is that social cooperation increases the likelihood for success in the gathering of required resources for survival such as food. It also increases the chances of survival of offsprings due to the cooperative raising
of the kids within the social grouping.</span>
D. Water light and CO2 are needed for the process of photosynthesis.
I'm not completely sure, but I'm fairly certain that the answer is B.