Asingle-celled organism is placed in fresh water. the contractile vacuole pumps excess water out of the cell. how does this action the organism to survive?

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation