Which layer of the earth is the coolest in temperature?
a. the inner core
b. the crust
c. the mantle
d. the outer core

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

What terms describes being out of water after being submerged