Alkaline works to offset the acidic vaginal fluid to create favorable environment for sperm. Fructose provides energy for sperm motility.
Answer:
Organism having the suitable traits appears more in the population.
Explanation:
Natural selection is a non-random process in the biological traits becomes less or more common in the population due to the different rate of survival of their bearer or their differential reproduction.
Natural selection leads to evolution because those organisms are selected to survive and reproduce which are having those traits that are better suited to a certain set of environmental conditions over others. As a result, the number of these organisms increases over time and they appear more in the population.
So natural selection leads to evolution as an organism having the suitable traits appears more in the population.
Answer:
Answer is free radical.
Explanation:
The free radical is known to be a product resulting from the metabolism of oxygen, that is , they are formed when oxygen splits into single atom. The free radical causes serious damage to the body , this process is known as the oxidative stress.
Note that , the activity of the free radical is that they seek out other electron to becoming a pair, and this is dangerous to the body.
The body can make use of the antioxidants to counter the oxidative stress.
The lining attached to the lungs is called the visceral pleurae.
