Organisms and populations compete for abiotic and biotic resources. how does competition affect these resources?
a. competition can limit or deplete resources
b. competition can increase biotic resources
c. competition can provide abiotic resources for other organisms
d. competition only affects biotic resources

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Which are evidence of seafloor spreading? check all that apply. molten material magnetic stripes continent material drilled core samples ocean water samples

Amajor source of energy for your body comes from