If all insects have wings that are part of the exoskeleton, then what have wings that are part of the exoskeleton? Answer choices: - animals - honeybees - barnacles - mammals - all snakes - all spiders - all insects - all arachnids
all insects

If cells are the microscopic building blocks of living beings, then what is the microscopic building block of any living being? Answer choices: - trees - cell - oxygen - moss - molecule - plants - blood - life
cell

If amolecule that causes antibody production is found on cancer cells, then amolecule that causes antibody production is found on what? Answer choices: - solid, liquid, gas - organs - Epidermis - aqueous solution - the skin - animals - cancer cells - humans
cancer cells

If tar causes damage to the lungs, then what causes damage to the lungs? Answer choices: - breathing - tar - HPV - fire - CFCs - sunshine - coal - mist
tar