Ques: Q: Some reactions need extra help to occur quickly. they need another substance called what? Choices: - neurotransmitter - protein - hormone - a catalyst A:
Ans: a catalyst

Ques: Q: What type of species can alternate between medusa and polyp forms? Choices: - mollusks - crocodilian - chordata - cnidarian A:
Ans: cnidarian

Ques: Q: What lets different species of anole lizards live in the same area without competing? Choices: - concentration - cooperation - variation - specialization A:
Ans: specialization

Ques: Q: In dioecious animals, females generally produce what contribution to reproduction? Choices: - milk - warmth - intelligence - eggs A:
Ans:
eggs