The answer you are looking for is A) Fish
Fishes are examples of Vertebrates. They are cold-blooded; obtain dissolved oxygen in water through gills; most of them lay eggs; have scales; have fins; live in water.
Answer:
The recessive trait reappeared about 25% of the time
Explanation:
There were no short plants in the F1 generation, although one of the parents was short. However, the characteristics reappeared in its original form in 1/4 of the F2 plants. He concluded that each hereditary characteristic is determined by two contrasting hereditary factors.
Micro evolution by mutation in the DNA
<span>The substance that serves best to keep our skin smooth and protected is Keratin. Keratin is a fibrous structural protein and is the protein that protects epithelial cells from damage or stress. Keratin is insoluble in water and organic solvents</span>
Answer: It helps to regulate circadian rhythm
Exposure to natural light during the day helps regulate the circadian
rhythm, which improves sleep pattern. The term circadian rhythm refers to our
biochemical, physiological and behavioral processes in approximately 1 full day
cycle. Circadian rhythm plays an
important role in
controlling when we fall asleep and when we wake up.
During day light, the secretion of melatonin or sleep hormone is
suppress by melanopsin that keeps people awake and alert. Nevertheless, during nighttime,
melanopsin stimulates the release of melatonin to signal sleeping time. Therefore,
this hormone works the entire day and has direct effect on the circadian
rhythm, which acts as a regulator of our biological clock.