Where would you most likely find infectious agents? check all that apply.

in saliva
in mucus
on a door handle
on a water fountain
on a gene
in sewage
in animal waste

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction

Question 17 (1 point) where does penicillin come from? a. it is a chemical that man invented b. it is a fungus c. it is a toxin made by other bacteria d. it was discovered in archaebacteria