The transparent part of eye that helps to focus image.
cornea or lens?

Providing immunity by injecting the body with a weakened form a pathogen is known as

Football players often sustain lateral blows to the extended knee. which of the ligaments is (are) damaged as a result? a. suprapatellar b. oblique popliteal and extracapsular ligament c. medial collateral, medial meniscus, and anterior cruciate d. arcuate popliteal and the posterior cruciate

What percentage of light hits earth's surface directly?