Answer:
Darwin conducted an experiment with breeding pigeons.
Explanation:
The pigeons provided the perfect animal to test his theory of selection for quite a number of reasons including its trait diversity from wing structures to color patterns to size to flight patterns. From these experiments he concluded that by natural selection of randomly occurring traits that make species better suited for survival and reproduction, evolve in the astounding diversity of organisms on Earth today.
<em>(not my words) </em>
Uracil user is not present in dna
Well enegry helps them stay active all the time but at night even animals need to rest to restore energy for the next day and nutrients helps them grow and gives them vitimn a, c ,b ,e, and d oh and iron it also helps them to be active in some caces.
The answer is D. Mutualism is the symbiotic relationship when both organisms benefit. Predation is not a symbiotic relationship. Parasitism is the symbiotic relationship where one organism benefits and the other is harmed.
Answer:
By squeezing a bulb attached to the wide end of the pipette
Explanation:
You squeeze the bulb and place it on the wide end of the pipet. Then you place the tip of the pipet in the solution and release your grip to pull it into the pipet.
B is wrong, unless you want to accidentally get a mouthful of the sulfuric acid or cyanide you are pipetting.
C and D are wrong. Even the wide end of a pipette is too narrow to fill with either a beaker or an eyedropper.
