Which could reduce loss of biodiversity

a. increase construction of tall buildings
b. increase farming operations
c. increase conversation measures
d. increase the human ecological footprint

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?