Answer:
a. are probably built by different genes.
Explanation:
Although sharks and dolphins are aquatic animals belonging to the vertebrate group, sharks are fish while dolphins are mammals. Sharks belong to the class Chondrichthyes which are fish that have a cartilaginous skeleton. On the other hand, dolphins are mammals (class Mammalia) which are animals mainly characterized by the presence of mammary glands. In consequence, both species are not closely phylogenetically linked, thereby those genes involved in the development of the integumentary system (skin) in both species are expected to be different.
Answer: B. The blood is circulated out of the body for cleansing and then returned.
Explanation:
Hemodialysis is a medical therapy in which the patient's blood is taken out with the help of tubes and treated out of the body. The blood is pumped out using the blood compartment. The blood is circulated using a external filter, that is called as dialyzer. The blood get cleansed and impurities are removed and purified blood returned via circuit back to the body. This technique is used to control the blood pressure and balance of important minerals in the body that involves the potassium, sodium and calcium in the blood.
Based on the above information, option. B is the correct option.
<h3><u>Answer;</u></h3>
Temperature and salinity
<h3><u>Explanation;</u></h3>
- Differences in the density of water can cause currents to form and move.
- Density is affected by temperature and salinity. Cold water or water with dissolved salts (higher salinity) is denser than warm water or water without dissolved salts.
- The different densities cause the water to move, forming a density current. In the oceans, the deep,bottom currents are colder and saltier than the surface currents.
The answer that contributes to Mars's cool temperatures is the third choice - Its thin atmosphere and distance from the Sun.
Mars is relatively distant from the Sun - it is the fourth planet away from the Sun which means that it can be quite cold there given that its atmosphere is quite thin which means that the cold is quite present there.
<span>Low-saturated fats - can reduce the risk of developing heart disease and lower cholesterol
Saturated fats - increase </span><span>blood cholesterol and heart attack rates
Trans fats - increase </span><span>blood cholesterol and heart attack rates
</span><span>A low-saturated fat, high-fibre diet can reduce the risk of developing heart disease and lower cholesterol.</span>
