Q: Q: What is the first digestive organ that food enters? A:

OPTIONS:
- intestine
- digestive system
- kidneys
- mouth

A: mouth

input: OPTIONS:
- organisms
- questions
- tissues
- samples Now, answer this question: Q: In scientific investigations, descriptive statistics are useful for summarizing the characteristics of large what? A:
A:
output: samples

Q: Shark teeth likely evolved from the jagged scales that cover their skin, called what? A:

OPTIONS:
- heterotroph scales
- hook scales
- pinworm scales
- placoid scales

Answer: placoid scales

Problem: OPTIONS:
- light
- oil
- fuel
- electricity
Q: Q: Nuclear reactors use fission reactions to vaporize water, producing steam to drive a turbine and generate what? A:
Answer: electricity

Problem:OPTIONS:
- divide
- lengthen
- multiply
- shorten

Q: What happens to an animal's telomeres as it ages? A:
****
A: shorten

Problem:OPTIONS:
- continuous succession
- environmental succession
- colony succession
- ecological succession

Q: What is the term for the process in which an area that has never before been colonized changes through time? A:
****
A:
ecological succession