Organisms that produce their own food release oxygen into the air. This oxygen is important to the environment because — A. animals breathe in and use this oxygen.
B. oxygen helps prevent storms that can harm the environment.
C. animals use oxygen to make water.
D. oxygen helps make sure the temperature stays the same.

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a. doing door-to-door sellingb. using billboards to advertise the productsc. making online shopping services availabled. giving discounts on products

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.