A. Decreasing amount of energy needed to start a reaction.
Answer:
Gravitational attraction provides the centripetal force needed to keep planets in orbit around the Sun and all types of satellite in orbit around the Earth. This means gravity makes the Moon accelerate all the time, even though its speed remains constant.
Explanation:
7. Succession, 6. Extinction, 5. Niche, 3. Ecosystem, 2. Population, 1. Habitat, 4. Environment, 8. Community
Hope this helped.
Answer: Im not completely sure but I believe that is true as they do soemthing similiar in other types of surgeries.
