Check all the characteristics below that describe elements
one type of atom
a pure substance
more than one type of atom
chemically combined elements
DONE

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions

Science which of the following is an example of a cyclic behavior that is seasonal? i think the answer is d, i just need to double check : ). a. running from predators. b. searching for water. c. hunting at night. d. migrating for warmth. ***