Answer:
A gene is a section of a chromosome that codes for trait.The specific combination of alleles an organism has is called its genotype which affects the organisms features.
Explanation:
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate. Such factors as stress, caffeine, and excitement may temporarily accelerate your heart rate, while meditating or taking slow, deep breaths may help to slow your heart rate.
A coral reef is made of<span> thin layers of calcium carbonate. </span>Coral<span> polyps form a living mat over a calcium carbonate skeleton.</span>
Robert Hooke used a compound microscope to look at thin slices of cork.
Answer:s
Q1. Skeletal anatomy
Q2. Desire of an entity to remain in a balanced state of resist.change.
Q3. Elk having smaller horns attributed to hunting for Elk with larger horns.
Q4. True
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