Answer:
when its is winter in North America it is summer in South America and vise versa
Explanation:
the Northern hemisphere is facing up and Southern Hemisphere is facing the sun and vise versa
A. Chloroplast would be the answer hope this helps dear! if u can please put me as brainliest!
Answer: An antigen
Explanation:
A molecule that evokes immune response in the body of an organism is known as antigen. These substance can be protein, carbohydrates, lipids when asked for chemical nature.
Physically these substance can be dust particles, smoke, pollen grains, some food particles. Antigen can be defined as the substance that tends to produce immune response by the immune system of the body.
Hence, the correct answer is option D
True: because it acts as a semi permeable membrane.
