Mesophyll is a partí al reaction
Hot: drought
Cold; dead animals
rainy: flood
cloudy: thunderstorms
mostly natural disasters: everythings dead
Answer: pretty sure it’s the number of mitochondria in muscle cells
Explanation:
Human Immunodeficiency Virus -- this is HIV, the virus that causes AIDS.
Flu viruses. There are lots of different strains of flu virus, which is why new vaccines have to be made every year.
Cold virus. The common cold is caused by a virus.