They are dangerous to the environment because they have no natural competition. That being said they have nothing to keep their population in check, therefore, taking away food, and habits from all the other species. Thus, causing species to die out, which in turn ruins the food chain.
DNA because DNA always has a double helix
Answer:
The two processes which returned water to the atmosphere in the water cycle are the following.
1) Evaporation: It is a process in which water goes to the atmosphere in the form of vapours from the surface of earth and water bodies such as ocean, lakes and rivers etc. It occurs at all temperatures.
2) Transpiration: It is a process in which water is evaporated in the form of vapours from the surface and inside the body of plants.
