PLEASE HELP FAST Fill in the blank Ozone is a molecule made of three oxygen atoms. It resides in the atmosphere and helps protect the planet from the Sun's highly damaging ultraviolet rays. This gas also helped cool early Earth's a. lithosphere
b. atmosphere
c. hydrosphere
d. core

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

Where is the nictitating membrane found? a. between the eyelid and the eyeball b. between the retina and the optic nerve c. between the outer and middle ear d. in the organ of corti in the middle ear

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow