Which of the following BEST explains why humans selectively breed plants?

What can the location of a fossil in a rock layer tell scientists about the organism?

Which of the following is a true statement about asexual reproduction?

Which of these BEST describes why most of the puppies in a litter look similar to their parents?

Fossil records show that a bird once lived throughout the US suddenly died off in the habitat east of the Rocky Mountains. Which of the following BEST explains why this occurred?

Some mushrooms produce spores that do not require fertilization. Reproduction by spores in these mushrooms is an example of

What type of clues can body fossils give us about a fossilized animal?

Biological evolution means that the traits of groups of organisms change over time. Which information would provide the least convincing evidence for evolution?

How do scientists learn about organisms such as dinosaurs that disappeared from Earth long ago?

What is inbreeding an example or?

The type of reproduction that involves the joining of two specialized cells called gametes is

Some kinds of Staphylococcus aureus bacteria have become resistant to antibiotics. According to the theory of natural selection, what is their resistance an example of?

Pea plants have green seeds only if a plant receives an allele for green seeds from each of its parents. What kind of allele produces green seeds in pea plants?

Variations may allow the physical characteristics of organisms to change over successive generations. Which of the following are MOST LIKELY to lead to variations within a species over time?

A certain species of trilobite is known to have lived 300 million years ago. If this index fossil was found in a rock layer containing other fossils, what could you infer about the other fossils?

A bird species feeds on the seeds of a particular tree. A drought causes the outer covering of the seeds to become thicker and harder. After many generations of drought, what is the MOST LIKEL Y effect of this change on the birds?

What happens if an environment changes and a population in that environment has no adaptations for the new environment?

Which pair of organ systems work together to fight viral diseases such as the Ou?

Which of these cell structures is involved in the inheritance of traits?

Three finch species observed by Charles Darwin on the Galapagos Islands each had different beak shapes. Which statement is MOST LIKELY true about these finches?

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