Q: What is the most abundant type of biological entity on the earth? A:
OPTIONS:
- bacteria
- reptiles
- insects
- viruses
viruses

Q: The reactions between alkali metals and water are particularly vigorous and include the rapid production of large quantities of what gas? A:
OPTIONS:
- helium
- oxygen
- carbon
- hydrogen

Answer: hydrogen

Question: Q: Duckweed and cattails serve what role in the food chain in freshwater biomes? A:
OPTIONS:
- tertiary consumer
- secondary consumer
- primary consumer
- primary producer
Answer: primary producer

input with options: Q: Protein chains containing 10 or fewer amino acids are usually referred to as what? A:
OPTIONS:
- polypeptides
- protons
- carboxyl
- peptides
output: peptides

Q: Q: What is the term for tough protein fibers that connects bones to each other? A:

OPTIONS:
- tetons
- cords
- muscles
- ligaments

A: ligaments

Q: The layers of the atmosphere correspond with what changes with altitude? A:
OPTIONS:
- friction
- nitrogen
- oxygen
- temperature
temperature