Http://study.com/academy/lesson/positive-negative-feedback-in-biological-systems.html
Here's a link :)
Answer:
In horizontal rock layers, the oldest layer is at the bottom. Each higher layer is younger than the layers below it.
Explanation:
The answer is B . just think like foot ball players or other characteristics.
Answer:
Energy from the sun (solar) will not be used to light up the oceans, if there is no sunlight, no solar energy would be present. Good day. This was in my own words.
Answer:
The contrast in coloration was pivotal to determine if predators attack snakes based on their colors.
It was for studying MIMICRY in snakes.
Assuming all the.snakes were the same the number of attacks will not indicate anything about the effect of the colored rings.
This question on the need for provision of a controlled experiment during experimental investigation. Thus in order to test the effect of a particular condition,another contrasting condition must be provided to determine if the condition under investigation is the actual results obtaned or the influence of other factors in the environment or in the experiment.
The change in the color of the ring is the VARIABLE .In the artificial snake the variable is the presence of this coloed rings against its absence in this snake.
since it changes in the artificial snake
Explanation:
