He mainly studied birds; finches were the main ones he studied.
Present perfect is formed with: have/has + past participle.The past participle of study is studied. So the present perfect is:have studied --- I have studied English Grammarhas studied -- She has studied algebra
electronics
Female Wasps
Sally Ride studied Astronomy and Physical Science.
Test
he studied everything and its all about discovering.
"Everything. . . affects everything."
Everything you experience, observe, or think, affects your beliefs.
A gravitational field affects everything that has energy (or mass, but mass is a form of energy). As such it affects virtually everything.
Yes.
Yes. Gravity affects EVERYTHING.
A person who has studied and knows everything about wine.
smoking and drinking
It affects everything
He studied the planets and the sun most of all. He wanted to discover if the sun truly was the center of everything. He studied and studied until he realized the sun is at the center.
An organism's environment is everything that surrounds it.