Answer:
The correct answer is- Immune system
Explanation:
There are physical, chemical and immunological barriers present in our body which helps us to protect from the foreign antigen. They all assist each other and helps in pathogen removal from our body.
The physical barrier includes skin, gastrointestinal tract, respiratory tract, etc which do not allow the microbe to enter the body. Chemical barriers include tear, saliva, acid in the stomach which kills microbes on the body surface.
Immune cells like macrophages, B cells kills microbes when it gets in the body. Lymphatic system also contain immune cells and helps in microbe removal.
So the immune system is assisted by physical barrier, chemical barrier, and lymphatic system.
<h3><u>Answer</u>;</h3>
D. reproduce and increase the frequency of their genes in the population
<h3><u>Explanation;</u></h3>
- Natural selection refers to the process that occurs naturally by which organisms better adapted to their environment tend to survive and reproduce more than those less adapted to their environment.
- <em><u>For example, a prey population consists of individuals with a variety of running speeds, will be better adapted to the environment as they will be able to run away from their predators and hence reproduce and increase the frequency of their genes in the population.</u></em>
what's up? this answer is B
if you look it up, you will see that a glaucoma is much smaller and looks like it only covers the pupil. on the other hand, a cataract is more cloudy and covers more of the eye, like shown in the picture. cataracts affect the lens of the eye
best of luck with your studies!
