Answer:
The homes of the species would be ruined, and they might become extinct.
Explanation:
Pollution causes a lot of bad things to species to homes and them in general.
Answer:
her arms are puffy red and swollen
Explanation:
These are physical signs (symptoms) that show that the girl may have an allergic reaction. Hope this helps
Answer: it might be chemical 1, but I could be wrong
Explanation:
Bone —> provides structure for the body.
Heart —> pumps blood through the body.
Stomach —> breaks down food into small particles.
Lung —> oxygenates blood.
Answer:
Independent variable: Adding/not adding soil.
Dependent variables: Does the plant grow? Amount of leaves, plant length.
Controlled variables: Type of plant used, amount of sunlight received, pot used for plant, amount of water given, temperature of soil, etc.
Explanation:
Independent variable: The thing that you want to change. To see if plants need soil to grow, you would need to either add or remove soil altogether.
Dependent variables: The thing that is being measured. By adding your independent variable, you should be able to answer certain questions.
Controlled variables: Things you want to keep the same for each experimental group. For example, if you used different plants, your results could be affected negatively as some plants might rely on soil less than others/grow at a slower or faster pace.
