Q: If cutting down trees has a negative impact on the health of humankind, then cutting down trees has a negative impact on the health of what? Answer choices: - space - humankind - mars - aliens - salmon - Species - humans - plants
A: humankind

Q: If fertilization takes place in human females, then what kind of females does fertilization take place in? Answer choices: - humans - fertile - plants - bees - orchids - sperm - Flowers - post-menopausal women
A: humans

Q: If antibodies are large, Y-shaped proteins that recognize and bind to cancer cells, then what do antibodies recognize and bind to? Answer choices: - humans - vitamins - h2o - harmful substances - cancer cells - electrons - the skin - protect them
A: cancer cells

Q: If something containing urea cools the body, then the thing that cools the body contains what? Answer choices: - liquid - matter - vapors - oxygen - Urea - nektar - water - Air
A: Urea