group of animals with true differentiated tissues

individual with the appropriate number of chromosomes for their species

mammal that possesses a complex placenta, which connects a fetus to the mother; sometimes called placental mammals

process whereby nutrient runoff causes the excess growth of microorganisms, depleting dissolved oxygen levels and killing ecosystem fauna

change from liquid to gaseous state at a body of water's surface, plant leaves, or an organism's skin

movement of the sole of the foot outward, away from the midline of the body; opposite of inversion

process of gradual change during which new species arise from older species and some species become extinct

(also, Darwinian fitness) individual’s ability to survive and reproduce

depolarization of a postsynaptic membrane caused by neurotransmitter molecules released from a presynaptic cell

describes chemical reactions that release free energy

outermost covering of pollen

outermost covering of a fruit

process of passing bulk material out of a cell

sequence present in protein-coding mRNA after completion of pre-mRNA splicing

a secreted cellular product external skeleton that consists of a hard encasement on the surface of an organism