1: Rain forests are one example of an ecosystem, the abiotic factors, the sun and rain. The trees and the biotic factors, the animals are working together to survive
2: A rain forest and an ocean are allke in some ways and are different in some ways. In a rain forest the abiotic factor is the sun and the rain.
3: However, an ocean's abiotic factor is the water. A way they are alike is that they both are damp, and possibly they both have fish.
4: A rain forest and a desert are the same way. Some alike some different. One thing they have in common is that they both have 2 abiotic factors.they both have water and the sun.
5: However, they are also quite different. A desert is very arid whereas a rain forest is very damp. A deserts biotic factors are the cacti and the animals such as birds.
6: An ocean and a desert have only one thing in common, they need water for the animals to survive.
7: However, they are very different as an ocean is very damp and a desert is very arid. An ocean has more organisms living in it than a desert does as well.