The answer to this is Gonads.
Acne is to excessive secretion of oil
What is the question sweety
Answer:
B.entire ecosystems are being destroyed
Explanation:
for the generation of new species, the present species should have to survive for the period of thousand years in order to produce and develop much better features to make them much better to survive and adapt themselves according to the time.
but in today word, the world living conditions are changing and threatening due to destruction of ecosystem by many activities performed by humans. These destruction will cause endangerment of the generation of the new species.
Answer:
The answer is (d) (iv) and (v).
Explanation:
Soil bacterium Bacillus thruingiensis (Bt) produces proteins that kill certain insects like lepidopterans (tobacco dudworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes). Bacillus thuringinesis forms some intracellular protein crystals. These crystals contain a toxic insecticidal protein. The Bt toxin protein exists as an inactive toxin and is converted into an active form due to the alkaline pH of the alimentary canal that solubilities the crystals. The activated toxin binds to the surface of midgut epithelial cells and creates pores which cause cell swelling and lysis and finally cause the death of the insect.
So, the correct answer is '(iv) and (v)'.