Answer:
B. Case-Control
Explanation:
A case-control is a study that compares a group with an outcome of interest (cases) with a group who do not have the outcome (controls). This study aims to looks back retrospectively to compare how frequently the exposure to a risk factor is present in each group and with that to determine the relationship between that risk factor and the outcome.
So in this case, the cases are children with pervasive development disorder and the control is those without the disorders.
These studies are normally observational because no intervention is attempted.
The answer is tubulin cyclin and a
cyclin-dependent kinase
The two components that
constitute an active maturation-promoting factor (MPF) is tubulin cyclin and a
cyclin-dependent kinase. MPF stimulates the mitotic and meiotic phases of the
cell cycle. It has the ability to phosphorylate target proteins at a specific point
in the cell cycle and thereby control their ability to function.
Answer:
We at Bright Side invite you to take a look at what you can expect from your body when you finally pull yourself together and start training. Illustrated by Ekaterina Gapanovich for Bright Side.
Explanation:
A soil can be low in ammonium and potassium ions because of increased acidity of the soil. The acidity is caused by hidrogen (H) and Al (alluminuim) ions. There few causes: acid rain, nitrate leaching, rainfall, decompositions of organic matter (leaves, corps etc) due to microorganism activity.
Answer:
• ecosystem. A community interacting with its physical environment through the transfer of energy and materials
Explanation:
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