Answer:
a. mouth
Explanation:
Carbohydrates start digestion in the mouth
Unlike other renewable energy sources, biomass can be converted directly into liquid fuels, called "biofuels," to help meet transportation fuel needs. The two most common types of biofuels in use today are ethanol and biodiesel, both of which represent the first generation of biofuel technology.
The answer is (D) sometimes people who lived along the banks of the river are displaced
Answer: Option B
Explanation: Spermatogenesis
Spermatogenesis can be defined as the process by which the spermatozoa (haploid) develops from the germ cell In the semniferous tubules of the testes.
The damage in the testes can result in the mutation in the man's sperm cells. Any damage to the this structure will result in hindrance in the process of spermatogenesis.
