What animals eat a robin

RNA polymerase: Group of answer choices 1. can synthesize RNA chains without a primer. 2. binds tightly to a region of DNA thousands of base pairs away from the DNA to be transcribed. 3.

Sexual reproduction promotes genetic variation. One way variation occurs is via the production of gametes during meiosis. Sexual organisms are the product of sperm and egg, receiving chromosomes from both parents.

Genotype made of the same alleles

Imagine that a researcher is studying a population of nerve cells known as the neural crest. In mice, when these cells fail to form or migrate properly during development, the cranial ganglia and their associated nerves appear small.

Sedimentary rocks form when sand, mud, and pebbles create layers on top of each other. The pressure builds as each layer is added and eventually the layers turn into rock. What role does energy play in the formation of sedementary rock

One function of the human excretory system is: 1. making materials that the body cells need 2. removing excess heat energy from the body 3. moving substances to and from body cells 4. controlling the body's responses to stimuli

The main function of organelles is

Which agent of weathering most likely formed a canyon? a. glaciers b. wind c. plants d. liquid water

Why does a person feel fatigue and breathe harder after exercise? What process is going on their cells?

State a hypothesis based on the following questions: How do you think water will move within the watershed you create? How do you think this watershed compares to your own local watershed?