Which of the following is a theory for the dinosaur extinction?

1. Dinosaurs were allergic to pollen

2. Increased Radiation Levels

3. Diseases From Other Animals

4. All Of Above

Give three instantaneous scale (time) examples of Earth's systems, two long-term scale (time) examples of Earth's sytems, and three examples of cycles of Earth's systems.

Which of these structures transports sugars from the leaves to the roots? A-xylem b-tracheids C - trichomes D-phloem

Which of the following is one of the basic principles of social stratification? a. Low-level groups often have basic access to the rewards and privileges of higher-level groups. b. It is maintained through beliefs that are widely shared in a society.

2. What is the most creative Cell Analogy poster you observed in class? Why do you think it made an impression on you?

Which of these is NOT part of nature, so it would NOT be studied by scientists? OA) the Sun OB) prairie grass OC) human history OD) volcanic rocks

Flatworms can reproduce only by sexual reproduction. a. True b. False

If there are 14 chromosomes in pea plant cells how mant chromosomes are present in a sex cell of a pea?

Semiconservative replication involves a template. What is the template? a. DNA polymerase b. one strand of the DNA molecule c. single-stranded binding d. proteins an RNA molecule

What statement about zygotes is correct? A. Zygotes have a full set of chromosomes, receiving half from each parent. B. Zygotes have twice the number of chromosomes as each of its parents. C.

A ___ is a type of turbine used to capture the energy of moving air