Woese proposed a new classification system in 1990. What was different about his system?

The figure below shows feeding relationships among some organisms in an ecosystem. According to the evidence, which resource are some of the organisms competing over?

You are exploring and observe some hardened sediment that contains the impression of a bone. This is an example of what type of fossil? Mold Petrified Imprint Trace

Which of the following sequences of objects is in the correct order of increasing distance? A. Large Magellenic Cloud, Virgo Supercluster, Sirius, Jupiter, Moon B. Virgo Supercluster, Jupiter, Large Magellenic Cloud, Moon Sirius C.

Which is NOT a shared characteristic of all chordates?

What is the path of totality during a solar eclipse? O A. The sun is behind the moon, which casts its shadow on Earth. O B. The sun is between Earth and the moon, which casts its shadow on Earth. LOC.

How might a strawberry plant depend on birds? A. The birds provide shade to the strawberry plant. B. The birds eat insects that would destroy the plant. C. The birds eat the strawberries so the plant cannot reproduce anymore. D.

Which phase occurs directly after G1? A. S phase B. M phase C. Cytokinesis D. G2

Which describes the correct pairing of DNA bases? O A. A with T, and C with G O B. A with A, and G with G O C. A with G, and C with T O D. A with C, and T with G

How to have self control over heart rate?

1. All of the following would result in a change in population size except A. emigration of individuals out of the population range. B. equal birth and death rates. C. immigration of individuals into the population range. D.