Answer:
Option D, Gastric Juices
Explanation:
The second line of defense is a non specific defense mechanism in which no specific individual is targeted but all invaders are killed in general way. Some common mode of second line of defense are - Phagocytic cells (white blood cells), inflammatory responses, macrophage system etc. The second line of defense comes into action when the invader has surpassed the first line of defense which include either physical barrier like skin, mucous membrane, hair, cilia etc. or chemical barriers like gastric juices, saliva, Hyaluronic acid etc.
Hence, gastric juice does not belong to second line of defense.
Thus, option D is correct.
Answer:
Gain weight
Explanation:
Data provided in the question
Average energy expenditure = 1,800 calories
Average of calories per day = 2,949
Based on the above information, the judgment is as follows
As we can see that she consumes 2,949 calories per day and her energy expenditure 1,800 calories for 3 days
Plus she should gain as
= 2,949 calories - 1,800 calories
= 1,149 calories
So by this explanation, she definitely gains the weight
I don't really know but I pick b.have always been vestigial.
The poles never get any direct sunlight.
They both get the same amount of sunlight.
- Because they receive no direct sunshine, the Arctic (North Pole) and Antarctic (South Pole) are both chilly.
- Even at the height of summer, the Sun is low on the horizon. The Sun doesn't rise at all for several months during the winter since it is so deep below the horizon hence poles don't have equal amounts of sunlight and darkness.
- The poles receive less energy and heat from the sun because of the tilt of the earth and its orbit around the sun. There are just two polar seasons as a result: summer and winter.
- The tilt of the Earth's axis causes the Poles to experience around six months of day and six months of night.
- Due to this tilt, each Pole spends roughly six months angled both toward and away from the Sun. The North Pole experiences six months of nonstop daylight when it is inclined toward the Sun.
- In the winter, the Sun sets for extended periods of time since it is so deep below the horizon. Therefore, the days are chilly and dark, much like the nights. The South Pole and North Pole receive the same amount of sunshine despite being "polar opposites."
learn more about poles here: brainly.com/question/1776073
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