Select the statements that describe a vector. Check all that apply.
Vectors have a size only.
Vectors have a size and a direction.
Vectors are indicated with arrows.
Vectors can have only positive values.
Vectors can have positive or negative values.

i think it's c

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?