Explanation:
The experimenter alters the independent variable with the hopes of collecting data about how the dependent variable changes in response.Other variables have to be controlled so that any changes of the dependent variable are attributed to the known independent variable.
A frog is an amphibian so it survive both on land and water
Hope this helps:)
Answer:
The Tunica Media
Explanation:
Usually referred as the middle layer, it helps regulate blood flow and pressure.is a support for the vessel.Hope this helps:)
Some of the main causes are plant growth and ice wedging.
