Q: Which chemical element is the basis of all life on earth? Choices: - oxygen - nitrogen - hydrogen - carbon A:
carbon

Q: Tapeworms are what type of flatworms? Choices: - single-celled - endogenous - symbiotic - parasitic A:
parasitic

Q: Q: Rabies transmission occurs when saliva from an infected mammal enters a wound. the virus travels through neurons in the peripheral nervous system to the central nervous system where it impairs this? Choices: - lung function - skeletal system - reproduction system - brain function A:
A: brain function

Question: Q: The largest phylum in the animal kingdom, arthropod, is primarily comprised of what? Choices: - reptiles - mammals - amphibians - insects A:
Answer: insects

*Question*
Q: What classification system was developed by a swedish botanist trying to classify all known living things? Choices: - taxonomical system - plantological system - bionumerical system - linnaean system A:
**Answer**
linnaean system

(Q).
Q: What color light is actually the absence of electromagnetic waves in the visible spectrum, for humans? Choices: - ultraviolet light - infrared light - blue light - black light A:
(A).
black light