Q: Q: What type of species have a large effect on the balance of organisms in an ecosystem? A:

OPTIONS:
- decomposers
- producers
- secondary consumers
- keystone

A: keystone

input: OPTIONS:
- density
- size
- weight
- shape Now, answer this question: Q: Cells with different functions often differ in what physical property? A:
A:
output: shape

Q: What is stacked in layers in "layer cake geology"? A:

OPTIONS:
- sediment
- soil
- horizontal stata
- rock stata

Answer: rock stata

Problem: OPTIONS:
- elasticity
- malleability
- viscosity
- tensile strength
Q: Q: What term refers to the breaking stress that will cause permanent deformation or fracture of a material? A:
Answer: tensile strength

Problem:OPTIONS:
- cell structure
- ribosomes
- cell density
- sex chromosomes

Q: What determines sex in animals? A:
****
A: sex chromosomes

Problem:OPTIONS:
- temperature charges
- capacitance
- surface flow
- electrical charges

Q: In physics, resistance is opposition to the flow of what? A:
****
A:
electrical charges