Question

these factors influence forests
A.soil
B.sunshine
C.rainfall
D.all the above
​

Answer 1

Answer:

115

as low temperature inhibits growth of microbes. Jams and

pickles contain sugar and salt as preservatives. They do not

get infected by microbes easily.

(c) Beans and peas are leguminous plants and have Rhizobium

in their root nodules. These bacteria can fix atmospheric

nitrogen to enrich the soil with nitrogen and increase its

fertility.

(d) Though mosquitoes live on land, their larvae grow in water. If

water stagnation is prevented the larvae cannot survive.

27. (a) Cholera: By maintaining personal hygiene and good

sanitation practices.

(b) Typhoid: Eating properly cooked food, drinking boiled food,

gettting vaccinated against the disease.

(c) Hepatitis A: Drinking boiled water and getting vaccinated

against the disease.

28. (a) Lightning fixes nitrogen.

(b) Nitrogen fixing bacteria and blue green algae fix atmospheric

nitrogen.

(c) Nitrogeneous waste from excretion and death.

(d) Bacteria turn compounds of nitrogen into gaseous nitrogen.