Studying fossils provides evidence for evolution because fossils

Which statement best describes the interactions between the structures found within a single celled organism?

Sexually reproduced offspring have traits similar to their parents because they receive

Scientists have modified one gene in a plant so it now produces a natural form of rubber. The process that was most likely used to modify the plants' traits and increase their natural rubber production was

A response of a normally functioning immune system that can be harmful is

Which molecules are normally found in single-celled organisms?

PCR, Polymerase Chain Reaction, is a method for carrying out DNA replication. In order to perform this technique, a scientist would need

Killer whales are an endangered species. The decline in the whales’ numbers has been linked to poor nutrition, resulting in the inability to maintain a pregnancy. This risk to developing whale embryos is most likely a result of

A biotechnology tool, known as CRISPR-Cas9, allows scientists to precisely edit genes. In order to edit genes, CRISPR-Cas9 must be able to

By measuring the colors of light refl ected by different tree species in a forest, scientists can determine the amount of biodiversity present in different areas. Maintaining biodiversity is important because it

A student used a microscope to examine some cells. He observed strands located in the nuclei of these cells. These strands are responsible for coding different proteins and are known as

Which sequence best represents the correct order of events in the formation of a sexually reproduced individual?

Direct harvesting occurs when

In New York State, it is common for farmers to plant large fields of one crop, such as the cornfield. A negative outcome of this practice is that

Which statement best describes the process of competition?

Changes in external temperatures often result in a person either sweating or shivering. These responses are one way

Which statement about the response of the body to pathogens is correct?

Blood sugar levels increase after a meal and eventually return to normal. This constant correcting of blood sugar levels within the body is accomplished by

An electron micorsocoe is used to view things are extra small. Which is the smallest organims in the list that can only be viewed with an electron microscope

Smoking increases the risk of certain cancers of the mouth, esophagus, pancreas, kidneys, and uterus. This fi nding would be most reliable if it were based on

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