If the protein keratin helps to insulate and protect the body, then what helps to insulate and protect the body? Answer choices: - tail fins - Animal fur - fur seals - keratin - nitrogen - snow - Epidermis - poultry
keratin

If competition can result in bullying, then what can lead to bullying? Answer choices: - Cooperation - Isolation - Damaged hearing - Perfection - Competition - negative - smoking tobacco - heat or cold
Competition

Q: If tides are caused by the moon, then what causes tides? Answer choices: - waves - sunlight - Mass - moon - weight - force - wind - asteroid
A: moon

Question: If escaping poor weather and food supply changes population size, then escaping poor weather and food supply changes what? Answer choices: - population age - the environment - population education - general preferences - important habitats - population size - movement - an organism's body
Answer: population size

*Question*
If clams live in most terrestrial, freshwater, and marine habitats, then what lives in most terrestrial, freshwater, and marine habitats? Answer choices: - Birds - humans - clams - sharks - life - ecosystem - amoeba - edible
**Answer**
clams

If plant reproduction often requires bees, then what does plant reproduction often require? Answer choices: - viruses - bacteria - fire - DNA - bees - seeds - energy - food
bees