<span>Akhil Share.
Nov 29, 2015.
Origin of earth is about 4.6 billion years ago and origin of life took place 3.7 billion years ago in the ocean in Pre-Cambrian era. The first organism to be originated were the archebacteria ( Prokaryotes )</span><span>Nov 29, 2015</span>
The correct answer is option D. She should place one flower in a similar container, but not pump carbon dioxide into it. She should also give each plant the same amount of water.
In the experiment, a control should be present to compare the effect of the variable in the experiment. In the control sample, all the parameters except the variable should be same as the experimental group. In this way, the comparison of the effect of variable can be easily done in an experiment.
In this case, the variable is amount of carbon dioxide the plant receives. So, Stella should include a control group by placing the plant in the same container and leave it on atmospheric carbon dioxide supply, no extra carbon dioxide should be pumped into it. Also, the amount of water she give to each plant should be the same to maintain the water level as constant.
Answer:
Foliation
Explanation:
I just searched it. Foliation is layering in rocks, just like kit kats are layered.
Pollution can cause the loss of wetlands. The unsafe environment around wetlands can contaminate the water.
Digestive enzymes speedup reactions that break down large molecules of carbohydrates, proteins, and fats into smaller molecules the body can use. Without digestive enzymes, animals would not be able to break down food molecules quickly enough to provide the energy and nutrients they need to survive.
