The main parts of a controlled experiment are the dependent variable and the independent variable...
Platelets (prevent blood loss) and white blood cells (fight infection)
Answer:
it is a big question its what tye of question
Explanation:
brother i am here for point if i know answer i have been told you
Infertility, inconsistent periods, and pain in the cervix area
Answer:
The correct answers would be options 3 and 4.
Natural selection refers to a natural phenomenon by which organisms with survival traits tend to survive and reproduce more as compared to the organisms which lack such traits.
Due to this differential reproduction, survival traits tend to pass on to the offsprings and over several generations the phenotypic frequency of the population changes.
