Answer:
1. A natural killer cell identifies unusual cells, combines with them, and discharges perforin and molecules of granzyme that stimulates apoptosis.
2. A basophil comprises huge concentrations of histamine in granules, gets stain with basic dye methylene blue, and helps in inflammation and allergic reactions.
3. A macrophage refers to a huge agranular phagocyte, which is found within the tissues like lungs and brain.
4. An eosinophil comprises histamine and major basic protein in granules gets stain with acidic dye eosin and helps in reactions against the helminths and protozoa.
Answer:
Pacific
African
Eurasian
Explanation:
The Indo-Australian Plate is a major tectonic plate which includes the continent of Australia and surrounding ocean. It extends northwest to include the Indian subcontinent and adjacent waters.
It was formed as result of the fusion of Indian and Australian plates.
This plate includes India and Australia and it borders the Eurasian, African, Pacific and Antarctic plates
The biosphere is everything. the whole planet. so all of the above is right