Which can change from one state of matter to another at the temperatures and pressures experienced at Earth's surface?

water

Oxygen

nitrogen

carbon dioxide

Why does salt thrown on a frog's body will kill it?

TV Describe in details including plant life and animal life what ecosystem each of these represent?

name one animal cell and one plant cell that has no nucleus when fully developed. for each cell named, state its function

Asexual reproduction results in 1. offspring genetically identical to the parent. 2. offspring genetically unique to the parent. 3. offspring with 1 in a half the number of chromosomes as parent. 4. no offspring.

Which features are parts of the topography of an area? Check all that apply. elevation landforms people relief weather

The formation of pyrimidine dimers results from which of the following? spontaneous errors by DNA polymerase exposure to gamma radiation exposure to ultraviolet radiation exposure to intercalating agents

A student wants to test the hypothesis that an acidic environment will decrease enzyme activity. In the experiment, the student used an enzyme that breaks down hydrogen peroxide into water and bubbles of oxygen.

Which process makes it possible for the body to grow and repair? Meiosis Sexual reproduction Replication Mitosis

What is the value of x in the equation 2 (5x+4) = 17

A nurse is caring for a client with a history of falls. the nurse's first priority when caring for a client at risk for falls is: