Q: Q: The ability of a water spider to walk across a body of water is an example of what? Choices: - high density - low gravity - magnetism - surface tension A:
A: surface tension

Q: Q: What organism is an important pioneer on cleared rock and soil surfaces, such as volcanic flows and burned forests? Choices: - cysts - algae - pigment - lichen A:
A: lichen

Q: Q: In general, objects expand in all directions as temperature does what? Choices: - stays the same - cycles - decreases - increases A:
A: increases

Q: Q: What includes the bones and cartilage? Choices: - skull - lungs - fossil - skeleton A:
A: skeleton