Answer:
- Congress passed the Clean Water Act into law.
- The National Environmental Policy Act was passed, which led to the formation of the EPA.
Explanation:
Independent variable: The difference in the amount of water the plants are fed. Dependant variable: the health of the plants . Control variable: temperature, amount of sunshine, type of plant amount of co2,
The answer for Part A is: In an action-reaction pair the forces work on different objects.
There are several ways you can categorize things. This is an example of how I would put animals in order
1. Porifera (sponges)...they consist of a simple cell arrangement
2. Coelenterata (e.g Jellyfish) have an actual tissue
3. Platyhelminthes they are more complex and have muscles
4. Insects. They have several organs that and a simple brain
