Why aren't mountain ranges and polar ice caps classifies as biomes?

What is the definition for Phylogenetics? A.) The study of the evolutionary history and relationships. B.) The study of the evolution of physical change. C.) The change in religious beliefs. D.) The study of cellular change.

Which best describes the digestive system of arthropods?

What is the MAIN function of carbohydrates? a. To provide structure and support b. to me enzymes c. to provide short term energy d. all of the above

Jack and Linda are two friends who live within 10 miles of each other, but they live at different elevations. Jack lives near sea level and Linda lives 4,000 feet above sea level.

Your professor wants you to construct a phylogenetic tree of orchids. She gives you tissue from seven orchid species and one lily. What is the most likely reason she gave you the lily? a. to see if the lily is a cryptic orchid species b.

Unsegemented worms that are pseudocoelomates and have two body openings to their digestive systems are (a) Porifera (b) Arthropoda (c) Cnidaria (d) Nematoda.

Which is an advantage of genetic engineering

Describe the accepted theory during redi's time explaining the origin of the flies

What form is most freshwater found in, and why is that not useable?

What holds one strand against the other in the double helix