If echinoids use pheremones to communicate, then what do echinoids use to communicate? Answer choices: - light - Chemical energy - Decibels - pheremones - writing - Energy - heat produced - language
pheremones

If if an object reflects photons toward the eye then that object can be seen, then if an object reflects what toward the eye then that object can be seen? Answer choices: - observe it - sunlight - ultraviolet light - neutrons - Joules - photons - x-rays - positive
photons

Q: If evolution changes the characteristics of trees over time, then evolution changes the characteristics of what over time? Answer choices: - the Moon - Man - life - trees - rocks - the Sun - humans - plants
A: trees

Question: If eating something that contains pollutants can kill directly and selectively, then eating something that contains what can kill directly and selectively? Answer choices: - berries - candy - pollutants - Pesticides - influenza - humans - mushrooms - viruses
Answer: pollutants

*Question*
If yeasts use spores to reproduce, then what do yeast use to reproduce? Answer choices: - Energy - spores - sunlight - alleles - A kernel - pollen - propagate - seeds
**Answer**
spores

Q: If an animal requires food to grow and heal, then what does an animal require food for? Answer choices: - hydration - to grow and heal - for cold - aerobic capacity - organic molecules - food and shelter - to chill - for electricity
A: to grow and heal