The four laws or principles that are involved with the study of Stratigraphy are the following:
1. Principle of original horizontality
2. Law of superposition
3. Law of crosscutting relationships
4. Principle of Lateral Continuity
5. Principle of Faunal Succession
6. The Law of inclusions
Therefore, the correct answers would be 1, 2 and 4. Hope this answer helps.
Answer:
a. Independent Variable: different sized aquariums
b. Dependent Variable: number of surviving fish
c. Controlled Variables/Constants: amount and type of food, aquarium maintenance and water temperature
d. Experimental Controls/Control Groups: none
Explanation:
In an experiment, the dependent variable is the condition that is being measured or tested in the experimental procedure, while the independent variable isn't changed and serves to measure the outcome of the dependent variable. Moreover, the constant variables are those conditions that stay the same in the experiment. As observed in the case above described, an experiment usually has multiple constant variables. Finally, a control group is composed of individuals/research subjects who do not receive the experimental treatment, and therefore they can be used to compare the outcomes observed in the experimental groups.
Answer:
Very Little Sunlight
Few Nutrients
Low temperatures
Explanation:
It was correct on the test.
Answer:
It only records trends in population at fixed locations in the ecosystem.
Explanation:
The point count method is a method used to monitor the populaton of birds in certain places that consists on having someone fixed at one spot and record all the birds that he can spot by sight and by ear, so if he sees or hears a certain bird he records it, to have a close idea of the species of birds that there are in a certain location, the problem would be that it only records trends at fixes locations in the ecosystem.
Answer:
The color of the light changed
Explanation:
Correct on edge
