how nany of them is true and whic of them a) Important contributions to science have been made by men and women of many different cultures, countries, and ethnic backgrounds, over a long period of time. b)Most important scientific discoveries have been made by men in the Western Hemisphere. c)Most important scientific discoveries have been made in the last one hundred years.

I think all are true except b.

Explanation:

A is true and C is also true but I am not so sure about B but I think the most discovery in past were done in Northern hemisphere than western.

these conditions long with a short growing season made farming difficult.

explanation:

the north has a climate of warm summers and snowy cold winters. the terrain is rocky, hilly, and not good for farming.

c) women should home the rights as men.