As the universe expands it is the that is expanding. A. space between the galaxies
B. entire universe and everything in it
C. space within atoms and molecules
D. space within the galaxies

What was the land like over 500 million years ago? what was under the sea?

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.