Explanation:
The early atmosphere was mainly carbon dioxide and water vapour. Water vapour condensed to form the oceans. Photosynthesis caused the amount of carbon dioxide to decrease and oxygen to increase.
Carcinogens. They come in many forms (search them up) and can be very harmful.
Answer: C
Explanation: Your conclusion always comes last
Answer:
the water cycle can cause some waters that come from a polluted source to be cycled into aquatic enviroment lowering life quality for the inhabitants. at least i think so
Explanation:
Answer:
Factors like native plants and other animals competing for the resources.
Explanation:
The most important one for human civilization would definitely be the native plants because they will turn to be the ones that can be cultivated in that specific type of soil. For example, in the raining forests, cultivation like potatoes is not possible, because it's not a native plant. Another factor could be the other animals, or native animals, that compete for resources in that ecosystem, as they also interact with it, they would also be part of the decrease or increase of carrying capacity.
