The answer is : randomization was not used in sample selection. The major difference between experimental and quasi-experimental designs is lack of randomization in sampling selection.
9:3:3:1 would be the expected phenotypic ratio
B, The bacteria that live in the intestine of a rabbit. Biotic creature are things that are living, breathing, and need food/water to live. Hope this helps!! & have a great day!!!
All other organs, ducts, and glands in the reproductive system are considered secondary, or accessory, reproductive organs. These structures transport and sustain the gametes and nature the developing offspring.
Hope this helps!
Calcium is one of the most important minerals for the human body. It helps form and maintain healthy teeth and bones.
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Function
-Building strong bones and teeth.
-Clotting blood.
-Sending and receiving nerve signals.
-Squeezing and relaxing muscles.
-Releasing hormones and other chemicals.
-Keeping a normal heartbeat.
