The rainforests are depleting. Give reasons.

Answer (i) The statement is incorrect Possible events = (H,H); (H,T); (T,H) and (T,T) Probability of getting two heads = 1/4 Probability of getting one of the each = 2/4 = 1/2 (ii) Correct. The...

Water helps in formation of soil in following ways  (i) Water causes ‘wear off’ of rocks over a long period of time.  (ii) It also causes the rocks to rub against other...

q + w = ΔU. As ΔU is a state function, hence q + w is a state function.  On dissolution, entropy increases i.e., ΔS is +ve. If TΔS > ΔH,  then...

(a) The time for which the sound persists in the atmosphere after the sound has stopped producing from the source is known as Reverberation time. If reverberation time of a...

Hint— Mango tree is more complex and evolved because, it is eukaryotic, autotrophic, terrestrial sporophyte with covered seed. The bacteria is unicellular prokaryote and fungi are the heterotrophic, simple thallophyte...

(a) Echidna and platypus lay eggs, but are considered as mammals because  (i) They are warm blooded animals  (ii) They all have four chambered heart  (iii) Mammary glands for the production of milk...

Toucans, humming birds and birds of paradise are commonly found in the rainforests of the Amazon.

c. Dobson units are used to measure oxygen content

Species richness contributes to the well being of an ecosystem. So if the species diversity at tropical rain forests will increase to 12% it make a more stable earth ecosystem.

(a) Cumulonimbus