Running converts what type of energy into mechanical kinetic energy?
A chemical
C nuclear
b. electromagnetic
d. thermal

Which of the following is the most likely result of converting forestland to urban development? a.the amount of land available for lumber production decreases. b.fewer trees are needed because cities are made mainly of concrete. c.people discover more efficient ways to grow trees. d. the price of lumber goes down.

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal

In which of the following relationships is one organism always benefited while the other organism is always harmed