If protective, supportive environments are used by animals against weather, then protective, supportive environments are used by animals against what? Answer choices: - nutrients - offspring - disease - heat - reproduction - Allergies - weather - wind
weather

If birds secrete estrogen to attract a mate, then what do birds secrete to attract a mate? Answer choices: - Energy. - Energy - fur and fat - seeds - oxygen - pollen - Estrogen - acetic acid
Estrogen

Q: If wiring requires metals, then what can you use in wiring to produce current? Answer choices: - two - waves - bamboo - coiled - metals - energy - tube - photons
A: metals

Question: If bacteria can cause disease, then what can cause disease? Answer choices: - bacteria - medicine - healthcare - Pesticides - viruses - influenza - toxins - fish
Answer: bacteria

*Question*
If inhaled pollutions harms the respiratory system, then what system does inhaled pollution harm? Answer choices: - health - humans - the environment - circulatory - people - bones - lymphatic - cell wall
**Answer**
circulatory

(Q).
If rivers are better able to dissolve oxygen and nutrients than standing water, then which body of water would be able to dissolve oxygen and nutrients the best? Answer choices: - NaCl - Lake - Puddle - Pond - rain - CO 2 - River - sugar
(A).
River