Which of the following is a false statement?

a. pollution, ultraviolet radiation, and parasites have been implicated in the developmental abnormalities observed in amphibians.
b. commercial extinction is permanent
c. genetic diversity is important for agriculture
d. the present extinction rate is 10,000 times the background rate.

d. The present extinction rate is 10,000 times the background rate.

Explanation:

Extinction takes place at a natural “background” amount of closely one to five species per year. The present estimatation is that species are been lost at up to 1,000 times the background rate, with considerable dozens going extinct each day

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.