Vaccination is a process of injecting a dead or weakened form of a pathogen into the body. How does this help strengthen the immune system?

Explanation:

the immune system gets to see how the weakened disease reacts and what are its strengths.

C. It allows the body to keep pathogen information for future infections.

Explanation:

A vaccine helps develop anti bodies inside the immune system to fight off future infections or diseases

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.