In humans, the pelvis and femur, or thigh bone, are involved in walking. in whales, the pelvis and femur shown in figure 16–1 are

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

Biology ! the conversion of inorganic carbon to organic carbon by plants during photosynthesis is known as _[blank]_. filtration immigration reabsorption primary production

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above