Answer:
Um, this is kind of a place for learning things from each other and helping with school, not super a friendship platform, and you have amazing people around you IRL to be friends with. You don't need online
I believe in you!
Have a great day!
Explanation:
Carry blood away from the lungs - it's the only artery that brings blood into the heart instead of away.
Answer:
organic amines contain nitrogen atoms, N, that are singly-bonded to at least one carbon atom.
Explanation:
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Answer:B. Polar bears have variable hair density
Explanation: humming birds and woodpeckers are in different genera. Evergreen trees: the question should actually refer to conifer genera and angiosperm genera such as Casuarina and Exocarpos since many evergreen trees do not have needle like leaves, but in any case this again involves different species from many genera. Gills are a plesiomorphy common to all fish. Polar bears (Ursus maritimus) is a single species and hair density is within-species variation.
The correct answer would be option D, Heredity.
Heredity is the factor which is not critical in developing good physical fitness.
Explanation:
When a person inherit something, either physiological/biological or psychological from his parents or any side of parents, this is called as heredity.
Physical fitness is a process of making yourself physically fit. There are many factors that contribute in the development of good physical fitness like age, focus, behavior, environment, diet, workouts, etc, but heredity is not something which is crucial in developing good physical fitness.
No doubt heredity plays a vital role, as people may have physical structures or tendencies inherited by their parents, but this is not something which is crucial in the physical fitness development. A person can change his physical anatomy by working hard and putting a cap on his diet. This is something which is in the control of a person. Other factors that are actually crucial in this are not in a person's control like age, environment, etc.
Learn more about Physical Fitness at:
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