A change in the allele frequency of a population over time is called natural selection

survival of the fittest

adaptation

evolution

What is the name of the pathway that carries blood to the body and back to the heart? A. Pulmonary B. Circulatory C. Systemic D. Capillaries

Archaeopteryx fossils show that the animal had feathers like a bird. It also had a bony tail, teeth, and claws on its wings like a reptile. Scientists claim this is evidence of a common ancestor. What makes this a sound claim?

Explain how global wind patterns such as the prevailing westerlies in the northern hemisphere would be impacted if the rotation of Earth stops.

Digestion begins in the: a : mouth b : stomach c : esophagus d : colon

Which of the following is true of the water at the bottom of the ocean?

Select the phrases that accurately describe properties of the most common form of the DNA double helix. a. The phosphodiester bonds between nucleotide residues run in opposite directions in the two strands. b.

Which of the following aids in the weathering and transportation of rocks? A. ice B. electricity C. sunlight D. clouds

Geest p, mohseni m, linssen j, duran s, de jonge r, groeneveld a. the intensive care infection score - a novel marker for the prediction of infection and its severity. critical care (2016) 20:

List the three statements that make up the Cell Theory.

Describe the arrangement within energy levels of the six electrons of an atom of carbon