Q: Scientists perform experiments to test their hypotheses because sometimes the nature of natural universe is what? Choices: - become obvious - very obvious - this obvious - not obvious A:
not obvious

Q: What do you call the movement of molecules across a membrane without the input of energy? Choices: - obvious transport - reactive transport - active transport - passive transport A:
passive transport

Q: Q: Terrestrial and aquatic are the two basic categories of what, on earth? Choices: - substrates - atmospheres - dendrites - biomes A:
A: biomes

Question: Q: At what temperature does solid water melt to a liquid? Choices: - below 32 degrees c - below 0 degrees c - above 32 degrees c - at temperatures above 0 degrees c A:
Answer: at temperatures above 0 degrees c

*Question*
Q: Mutualism is an interaction between individuals of two different species that has what effect on both of them? Choices: - neutral - harmful - abnormal - beneficial A:
**Answer**
beneficial

(Question)
Q: The kidneys are a pair of bean-shaped structures that are located just below and posterior to the liver in this? Choices: - stomach cavity - cerebral cavity - mantle cavity - peritoneal cavity A:
(Answer)
peritoneal cavity