Q: Every chemical reaction occurs with a concurrent change in what? Choices: - neutrons - mass - hydrogen - energy A:
energy

(Question)
Q: Vertebrates are all chordates that have a what? Choices: - circulatory system - fossil - brain - backbone A:
(Answer)
backbone

Ques: Q: Circadian rhythms and migration are examples of what kind of behaviors in animals? Choices: - continual - fluid - finite - cyclic A:
Ans: cyclic

(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? Choices: - ecosystem - taxonomy - community - population A:
(A).
population

Ques:Q: What is transferred in an acid-base reaction Choices: - bonding ion - friendly ion - calcium ion - hydrogen ion A:

Ans:hydrogen ion

Ques: Q: What is the term for crops that are genetically modified with new genes that code for traits useful to humans? Choices: - mutant - embryonic - carcinogenic - transgenic A:
Ans:
transgenic