Q: What code is the same in all living things and shows that all organisms are related by descent from a common ancestor? Choices: - descendant - biochemical - intrinsic - genetic A:
genetic

Q: Although they are as different as deserts and wetlands, all of these ecosystem units have populations of interacting species? Choices: - corals - continents - zoos - biomes A:
biomes

Q: Q: What happens to temperature in the troposphere as the altitude increases? Choices: - it increases - it disappears - it stays the same - it decreases A:
A: it decreases

Question: Q: What kind of reproduction is vegetative reproduction? Choices: - sexual - meiosis - mitosis - asexual A:
Answer: asexual

*Question*
Q: Biological macromolecules are organic, which means that they must contain what? Choices: - hydrogen - aluminum - oxygen - carbon A:
**Answer**
carbon

Q: What do aquatic mollusk species use for respiration? Choices: - lungs - phototropism - pores - gills A:
gills