Answer the following question given this paragraph: Amphibians are vertebrates that live part of the time in fresh water and part of the time on land. They were the first vertebrates to evolve four legs and colonize the land. They most likely evolved from lobe-finned fish. Modern amphibians include frogs, toads, salamanders, newts, and caecilians. They are ectotherms, so they have little control over their body temperature. This allows them to be active in warm weather, but they become sluggish when the temperature cools. Q: Frogs are amphibians that live part of the time in fresh water and rest of the time where? Choices: - underground - in stagnant water - in salt water - on land A:
on land
Answer the following question given this paragraph: Substances that are polar experience dipole-dipole interactions. Q: What kind of interactions do polar substances experience? Choices: - monopole-dipole interactions - axial interactions - monopole-monopole interactions - dipole-dipole interactions A:
dipole-dipole interactions
Q: Answer the following question given this paragraph: Although air can transfer heat rapidly by convection, it is a poor conductor and thus a good insulator. The amount of available space for airflow determines whether air acts as an insulator or conductor. The space between the inside and outside walls of a house, for example, is about 9 cm (3.5 in) large enough for convection to work effectively. The addition of wall insulation prevents airflow, so heat loss (or gain) is decreased. Similarly, the gap between the two panes of a double-paned window is about 1 cm, which prevents convection and takes advantage of air's low conductivity to prevent greater loss. Fur, fiber, and fiberglass also take advantage of the low conductivity of air by trapping it in spaces too small to support convection, as shown in the figure. Fur and feathers are lightweight and thus ideal for the protection of animals. Q: Although air can transfer heat rapidly by convection, it is a poor conductor and thus a good what? Choices: - magnet - absorber - transporter - insulator A:
A: insulator
Question: Answer the following question given this paragraph: The liver breaks down excess amino acids and toxins in the blood. Q: Which organ breaks down amino acids and toxins that are in the blood? Choices: - skin - kidney - small intestine - liver A:
Answer: liver
*Question*
Answer the following question given this paragraph: Differences in density between water and air lead to differences in pressure. Q: Differences in density between water and air lead to differences in what? Choices: - resistance - sound - energy - pressure A:
**Answer**
pressure
Q: Answer the following question given this paragraph: X rays and gamma rays are the electromagnetic waves with the shortest wavelengths and highest frequencies. X rays are used in medicine and dentistry and to screen luggage at airports. Gamma rays are used to kill cancer cells. Q: Which electromagnetic radiation is used to kill cancer cells? Choices: - ultraviolet rays - X-rays - plasma rays - gamma rays A:
A: gamma rays