Climate variations- averaged by using weather conditions from past years. Climate variability varies by seasons, because some seasons get colder than others. Maybe there could be more precipitation in the atmosphere, therefore making it easier to calculate rainfall in the future. makes people be aware of storms that are coming so that they will be prepared for whatever is coming their way
Our cells reproduce so that we may grow and regenerate, the process of cellular reproduction is also the basis for human reproduction. Cellular reproduction is a means of creating new life.
Answer;
-Correlational; experimental
Two main types of designs used specifically in human lifespan studies are correlational and experimental.
Explanation;
-Psychological studies vary in design. In correlational studies a researcher looks for associations among naturally occurring variables, whereas in experimental studies the researcher introduces a change and then monitors its effects.
-An experiment isolates and manipulates the independent variable to observe its effect on the dependent variable, and controls the environment in order that extraneous variables may be eliminated. Experiments establish cause and effect. A correlation identifies variables and looks for a relationship between them.
Annelids are one of the organisms that has a systematized circulatory system and is closed.
The circulatory system serves to provide and deliver nutrients and oxygen throughout the organisms cells and tissues. The heart serves as the pumping organ and the cornerstone of the circulatory system.