For which object would a geologist use carbon-14 dating to determine age? An animal skull. A fossil. A rock with different colored layers. Lava.

How is the National Wildlife Refuge System similar to the Pacific Region Coastal Program? a. Both programs are concerned with providing habitats for wildlife. b. Both programs are primarily concerned with preserving fish species. c.

Look back at your answer to the previous question for tube C. Revise your answer to explain why there are more organisms at the top of tube C than at the bottom.

In which of the following does the land being moved contain approximately 60% water? landslide slump mudflow creep

The process of natural selection 1. is possible only when spontaneous mutations are forced by environmental pressures 2. is fundamentally a natural process that operates independent of the condition of the environment 3.

How do phosphates influence biotic factors?

Explain how the following modifications to cell structure could increase efficiency of materials exchange between the cell and its environment: The cell is thin and flat The cell has extensions such as cilia on its membrane The cell uses vesicles to

Three of these processes normally consume oxygen. Which process produces oxygen? A) combustion B) respiration in animals C) photosynthesis in plants D) operation of an acetylene torch

Why is membrane more permeable to potassium?

What is the difference between white and red blood cells apex?

LaKeisha stepped on a piece of glass and quickly pulled her foot away from that sharp object. Which of the following are responsible for sending a message to the muscles in LaKeisha's foot, resulting in her pulling her foot away from the piece of