During a lunar eclipse,

a) earth is between the sun and moon
b) earth must cross the ecliptic between full-moon and new-moon phases
c) the moon is between earth and the sun
d) the left edge of the moon is visible

According to the theory of punctuated equilibrium, at what rate does speciation occur? species change depending on the rate of natural selection. after periods of stasis, new species evolve relatively rapidly. species change slowly and eventually form new species. some species change quickly and others change slowly to balance the overall rate.

Which of the following systems in absorbing oxygen and releases carbon dioxide

In the african savanna,more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result