They study rocks from both the moon and the earth
Answer: A variable within a scientific experiment is something that is changed (i.e. it varies). There should be only one manipulated variable within a scientific experiment so that the experimenter can be certain it is this variable which causes a pattern in the resultant data, if any exists at all.
Explanation:
<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>
Candle wax is essentially the fuel that allows a candle to burn over long periods of time. Wax is composed of long chains of carbon and hydrogen that form waxy solids at room temperature and can be molded into any shape, the heat from the flame melts the candle wax into liquid vapor as well as liquid.