Q: Competition is a relationship between organisms that depend on the same resources. the resources might be food, water, or what? Choices: - thought - language - time - space A:
space

Q: Signals from rods and cones can follow several different pathways in what structure of the eye? Choices: - aperture - aqueous humor - lens - retina A:
retina

Q: Q: A pedigree is a chart which shows the inheritance of a trait over several what? Choices: - centuries - events - organisms - generations A:
A: generations

Question: Q: What is an isotope that is radioactive called? Choices: - isotopes - matured isotope - radionuclides - radioisotopes A:
Answer: radioisotopes

*Question*
Q: What happens to the mass number during a nuclear decay process by positron emission? Choices: - it rises - it decreases - it increases - remains unchanged A:
**Answer**
remains unchanged

Q: A nerve cell that carries messages is called a? Choices: - mitochondria - stem cell - platelet - neuron A:
neuron