The switch from mitosis to meiosis in spermatogenesis is regulated by levels of and this is induced by . Fill in the blanks. Group of answer choices low, glial cell derived neurotrophic factor (GDNF), luteinizing hormone (LH) high, glial cell derived neurotrophic factor (GDNF), luteinizing hormone (LH) low, testosterone, follicle stimulating hormone (FSH) low, glial cell derived neurotrophic factor (GDNF), follicle stimulating hormone (FSH)

1 - Follicle stimulating hormone FSH

2 - Luteinizing hormone LH

3  - Glial cell derived neurotrophic factor

Explanation:

Follicle stimulating hormone is a pituitary gland located underneath brain. It plays an important role in sexual development. FSH level in women stimulates egg production in ovaries and regulates menstrual cycle. In men FSH helps to control sperm production.

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion