Problem: OPTIONS:
- biological scientists
- ecological scientists
- integrated scientists
- environmental scientists
Q: Q: What type of scientists study the effects people have on their environment? A:
Answer: environmental scientists

Problem:OPTIONS:
- muscular and nervous
- skeletal and digestive
- vascular and muscular
- skeletal and muscular

Q: Which two systems together provide support to the body and allow for movement? A:
****
A: skeletal and muscular

Q: Birds have light-weight bones that are filled with what? A:
OPTIONS:
- water
- proteins
- blood
- air
air

Q: What explains the spherical shape of ceres, once thought to be the largest asteroid? A:
OPTIONS:
- orbital plane
- space debris
- low gravity
- high gravity

Answer: high gravity

Question: Q: What is beyond the atmosphere? A:
OPTIONS:
- object
- air
- vacuum
- space
Answer: space

input: OPTIONS:
- scientific insights
- scientific thoughts
- scientific guesses
- scientific theories Now, answer this question: Q: Explanations of some aspect of the natural world based on repeated observations are termed what? A:
A:
output:
scientific theories