Answer:
fossils, anatomy, molecular biology, direct observation, biogeography
Explanation: i think theres 5 . hope this helpss
This could help the elephant population rebuild by taking away some of its (predators). Elephants are a keystone species because they dig watering holes, which all animals need. You increase the number of elephants, you increase water availability.
T² = (4π²/GM)a³; where T is in Earth years, a is distance from sun in AU, M is the solar mass (1 for the sun), G is the gravitational constant.
In the given units, 4π²/G = 1
T² = 0.66³
T = 0.536 Earth years = 195.71 Earth days
