Answer:
The answer is B (determining costs of environmental preservation)
Explanation:
Forest engineers plan/direct programs for forest harvesting, reforestation, prevention and control for forest fires, environmental protection, and insect and disease outbreaks.
Using this information, we can clearly cross of A, C, and D. Leaving us with B, which completely lines up with our information on the job.
Expected because it’s something that’s not caused by humans which therefore means its environmentally caused.
<span>D) introduction of the animal into places that it has previously gone extinct.</span>
It is famed for the death of the dinosaurs. However, many other organisms perished at the end of the Cretaceous including the ammonites, many flowering plants and the last of the pterosaurs. Some groups had been in decline for several million years before the final event that destroyed them all. It's suggested that the decline was due to flood basalt eruptions affecting the world's climate, combined with drastic falls in sea level.
Brightly colored peacocks mate more frequently than drab peacocks is an example of Sexual selection.
Sexual selection is the "advantage which certain individuals have over other individuals of the same sex and species solely in respect of reproduction".
Some points about Sexual selection:-
- it's a mode of natural selection.
- concept was first introduced by Charles Darwin.
- called it as second agency of selection.
- natural selection is based on the struggle to survive but sexual selection is struggle to reproduce.
- it produce sexual dimorphism in second sexual characters.
- two types of sexual selection are:
a) intrasexual selection - in between same sex. it is also known as mate competition. Here two or males compete for each other.
b) intersexual selection - known as femal mate choice. Here females choose their sexual partner.
7. Some examples are Antlers in deer, feathers of peacock, comb of chicken.
Female peacock or peahens prefer to mate with males that have large and colourfull tails, to maximise their chance of reproductive sucess. This process is simply known as Sexual selection.
Learn more about Sexual selection here:
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