What are threatened species?Question 1 options:species we do not have enough data for to determine their population numbersonly large mammals like elephants, pandas, and whalesonly species poached for their organs or other partsspecies at risk for extinctionspecies that have already gone extinct

The correct answer is - species at risk for extinction.

Explanation:

Extinction is a threat to species of any living organism. The death or removal of last individual of a species is the condition of extinction.

It is commonly referred to the species as mostly species extinct from earth. Any size or type of species of living organism can be extinct.

b. lithosphere, asthenosphere, mesosphere   is the answer most likely

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave