Answer:
You need homeostasis to survive. Homeostasis is what warms up your body when your body's core temperature lessens. It also cools you down when you are very hot. For example, when you are very hot your body will release sweat particles to cool you down. Without homeostasis you would suffer from hypothermia or heat stroke at a higher probability.
Explanation:
Answer:
A cell uses active transport because active transport uses energy going from high to low (against the concentraion gradient) while diffusion (passive transport which doesn't use energy) goes from low to high.
Explanation:
The best option would be the letter A. They supply freshwater to support life on Earth.
Freshwater is the ultimate source of water in the terrestrial biome. It is not only important in the terrestrial biome but also in the aquatic ecosystem as it helps in transporting nutrients (ex. river is connected to the ocean).