Q: Some terrestrial species breathe through their skin and oral cavity because they lack what? Choices: - windpipe - nose - mouth - lungs A:
lungs

(Question)
Q: Out of the four ways that allele frequencies of a population can be changed, which way is caused by individuals leaving or joining the population? Choices: - Allopatric speciation - spontaneous mutation - mass extinction - gene flow A:
(Answer)
gene flow

Ques: Q: The enormous number of species is due to the tremendous variety of what? Choices: - tissues - sounds - measurements - environments A:
Ans: environments

(Q).
Q: After citric acid forms, it goes through a series of reactions that release what, which is then captured in special molecules? Choices: - metabolytes - chlorophyll - hydrogen - energy A:
(A).
energy

Ques:Q: What traits do the sponge and tarantula share? Choices: - number of eyes - number of legs - lifespan - lack of backbone A:

Ans:lack of backbone

Q: What are microscopic vessels with very thin, porous walls? Choices: - veins - arteries - valves - capillaries A:
capillaries