Which of the following is the only evolutionary force that can create brand-new genetic variation within a population? a. mitosis b. recombination c. mutation d. natural selection

What type of animal are harmful to humans?

What is the meaning of the word "thermal" in this sentence? all boys coming on the school camping trip need to bring a pair of long thermal underwear because it is going to be very cold this weekend.

What device can be used to make measurements globally? a. rain gauge b. buoy c. satellite d. thermometer i think the answer is c but im not sure

The double-lobed mass of tissue located in the mediastinum along the trachea behind the sternum that is involved in immunity is known as the

What is a zygote? A-structure that nourishes the fetus B-a sperm fused with an egg C-an un-fertilizer egg D-a ball of about 100 cells

Trees have active transport, why?

The question is how many chromosomes are in the sperm cells, and how many chromosomes will it's zygote have.

Recent research has found that on one island of the Galapagos two finch species interbred. This interbreeding may have resulted in a hybrid species that ultimately led to the extinction of one of the species Darwin discovered.

Which of the following statements about internal membranes in eukaryotic cells is false? a. In eukaryotic cells, internal membranes standardize the internal environment of all cellular organelles. b.

What is the net production of ATP, per molecule of glucose during the fermentation of glucose to lactate? A. 36 molecules B. 4 molecules C. 2 molecules D. None