<span>Step 1: Evaporation. The water cycle starts with evaporation. ...Step 2: Condensation. NASA: The Water Cycle [720p] ...Step 3: Sublimation. ...Step 4: Precipitation. ...Step 5: Transpiration. ...<span>Step 6: Runoff. ...</span></span>
Explanation:
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.
In the theory of natural selection, organisms produce more offspring than are able to survive in their environment. Those that are better physically equipped to survive, grow to maturity, and reproduce. ... Biologists have since observed numerous examples of natural selection influencing evolution.
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In the female reproductive tract, fertilization normally occurs in the follicular tube
<span>The control group would not receive any medication or they would be given the salt solution without any drugs with it (basically a placebo).
A dependent variable is a variable dependent on another variable: the independent variable. In simple terms, the independent variable is said to cause an apparent change in, or simply affect, the dependent variable.
The variables you have are what the rats are feed (their diet), number in cage, size of the cage (things such as a smaller care with more within it should cause undue stress), what they are exposed to within their environment. Even things sun as amount of light within the room, the temperature of the room, etc. </span>