How many variables should there be in a well-designed experiment?

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Which of the following is an example of motion in two dimensions?

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.