If blood is in short supply, which blood type would be the most beneficial to have on hand if someone needed a blood transfusion?

1. O+

2. O-

3. AB+

4. AB -

Whats the relationship between an owl and mice could be described as?

What part of the flower contains the male gametophyte?

Why are there more debates than answers when discussing stem-cell research?

Amber is hardened: bark-like material from cone-bearing trees gumlike material from cone-bearing trees needlelike material from cone-bearing trees

What does comparing DNA of different organisms allow us to determine

Igneous rocks were the first rock type to appear on Earth true or false

When a male bird of paradise spreads its tail and does a dance to impress his potential mate, what signals is it using? mimicry and movement body display and movement scent and movement imprinting and movement?

What is symbiotic relationship between Dung Beetle and Buffalo?

What is the most common threat to the human body from an invading virus? b. acid will ferment in the digestive system c. viral reproduction will destroy one healthy cells d. muscle tone in the heart will be stimulated

In what ways are the internal structures of lungs and intestines similar?