Answer:
The sun and the water.
Explanation:
In this experiment in which Joey and Elena want to determine which is the best fertilizer to use on pepper plants the independent or controlled variables are<em> the amount of sunlight and the amount of water the plants receive</em>. Identical plants are treated in the same way except for Super Grow fertilizer and Mo' Grow fertilizer. The fertilizers are the independent variable that may or may not show different results on the height of the plants.
Answer:
The correct answer is A. People breeding dogs to be less aggressive.
Explanation:
Natural selection, according to Darwin, is the process by which species adapt to the environment, given certain pressures it might set upon them. The other choices refer specifically to a natural adaptation, such as bacterias becoming more resistant, birds' beaks changing and moths changing to darker colors. However, a person breeding a dog to be less aggressive is not an example of natural selection, given the fact that specific breeding is an artificial method, not relying on the natural changes to adapt to the environment.
Answer:
it resulted in protests, sit ins and boycotts
