Jack is studying a few leaf samples. the first leaf sample has a single leaf blade. the second has leaflets arising from a single petiole. the third sample has paired leaflets along a central rachis. him classify these leaves correctly.

a: all three are compound leaves.
b: the first sample is a leaf and the other two are compound leaves.
c: the first two samples are simple leaves and the third is a compound leaf.

(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.

Which measure of an earthquake depends on how close you are to the focus?