How can prokaryotic protists have a nucleus?

Why might a trait that is an advantage today become a disadvantage in the future

3. Which of the following would an animal breeder use to increase the number of cows that give the most milk? a. overproduction b. genetic isolation d. artificial selection

True or false: The Milky Way does not include a planetary system.

1. Adaptations and variations show evidence of past a. Evolution b. Offspring C. Diversity d. Fossils

The respiratory system contains which of the following structures and organs? A. blood, blood vessels, heart B. tonsils, thymus, spleen, red bone marrow C. lymph nodes, lymph vessels D. lungs, respiratory passages, diaphragm

What kind of bond is formed when two atoms share a electron

The formula for carbohydrates is C n H 2n O n. Which statement accurately describes this general formula There are twice as many hydrogen atoms as carbon atoms There are more carbon atoms than oxygen atoms The ratio of the atoms is 1:1:2 in the

Why is ATP an important molecule in metabolism? A) Its hydrolysis provides an input of free energy for exergonic reactions. B) It provides energy coupling between exergonic and endergonic reactions.

Sensory information enters the spinal cord through the

The following are all true of organism in the Eubacteria Kingdom, except