collection of all the ecosystems on Earth

use of biological agents for technological advancement

any technological application that uses living organisms, biological systems, or their derivatives to produce or modify other products

living components of the environment

neuron with two processes from the cell body, typically in opposite directions

referring to two branches per appendage

devastating pandemic that is believed to have been an outbreak of bubonic plague caused by the bacterium Yersinia pestis

structure formed when cells in the mammalian blastula separate into an inner and outer layer

opening into the archenteron that forms during gastrulation

opening into the archenteron that forms during gastrulation

16–32 cell stage of development of an animal embryo

hypothetical inheritance pattern in which parental traits are blended together in the offspring to produce an intermediate physical appearance

pressure of blood in the arteries that helps to push blood through the body

estimate of urea in the blood and an indicator of kidney function

morphology or defining shape of an organism