Why do mountain goats have long legs and flexible hooves?

Q. What helps the animals living in mountains to protect themselves from cold conditions?

Q. Animals like camels live in deserts and have humps, long legs and flat feet, whereas animals in cold regions have thick fur or split hooves. Which of the following term defines the above features in animals living in desert or cold region?

Q.

Statement

Some hills are rocks

All rocks are mountains

All mountains are rivers

No river is canal

Conclusions

I. All hills are rivers

II. Some rocks are canals

III. Some rivers are canals

Q. In each question below are two/three statements followed by two conclusions numbered I and II. You have to take the two/three given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Statements
All hills are mountains.
All mountains are rocks.

Conclusions
I. All those rocks which are mountains are also hills.
II. All hills are rocks.

Q. What sheeps and goats do to communicate among themselves?