Q: The barrier defenses are not a response to infections, but they are continuously working to protect against a broad range of what? Choices: - mates - nutrients - ecosystems - pathogens A:
pathogens

(Question)
Q: Which system refers to the skin and its accessory structures? Choices: - digestive system - malpighian system - tomoxia system - integumentary system A:
(Answer)
integumentary system

Ques: Q: What type of hybridization does ammonia undergo? Choices: - h2O hybridization - ionic hybridization - nh3 hybridization - sp 3 hybridization A:
Ans: sp 3 hybridization

(Q).
Q: On the origin of species is a book by darwin that spells out what theory? Choices: - theory of reproduction - theory of the universe - theory of the computation - theory of evolution A:
(A).
theory of evolution

Ques:Q: What system carries nerve impulses to internal organs, controlling activities that are not under your control, such as sweating and digesting food? Choices: - limbic nervous system - circulatory nervous system - hormonal nervous system - autonomic nervous system A:

Ans:autonomic nervous system

Q: The properties of cyclic hydrocarbons are generally quite similar to those of the corresponding open-chain compounds. so cycloalkanes (with the exception of cyclopropane, which has a highly strained ring) act very much like noncyclic alkanes. cyclic structures containing five or six carbon atoms, such as cyclopentane and cyclohexane, are particularly what? Choices: - large - reactive - small - stable A:
stable