All the cells in the human body regenerate and are replaced as they age and become less functional. Regulatory and maintenance mechanism in
the human body cause new cells to form to replace the aging cells. Which
of the following best describes the new cells? *

The new cells do not share genetic material with the parent cells

The new cells are the identical copies of the parent cells

The new cells are smaller than the parent cells

The new cells combine characteristics of several parent cells

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis