Q: Q: Every chemical reaction occurs with a concurrent change in what? A:

OPTIONS:
- neutrons
- mass
- hydrogen
- energy

A: energy

input: OPTIONS:
- circulatory system
- fossil
- brain
- backbone Now, answer this question: Q: Vertebrates are all chordates that have a what? A:
A:
output: backbone

Q: Circadian rhythms and migration are examples of what kind of behaviors in animals? A:

OPTIONS:
- continual
- fluid
- finite
- cyclic

Answer: cyclic

Problem: OPTIONS:
- ecosystem
- taxonomy
- community
- population
Q: Q: What term refers to a group of individuals of the same species that live in the same area and is the unit of natural selection, adaptation, and microevolution? A:
Answer: population

Problem:OPTIONS:
- bonding ion
- friendly ion
- calcium ion
- hydrogen ion

Q: What is transferred in an acid-base reaction A:
****
A: hydrogen ion

Problem:OPTIONS:
- mutant
- embryonic
- carcinogenic
- transgenic

Q: What is the term for crops that are genetically modified with new genes that code for traits useful to humans? A:
****
A:
transgenic