Answer the following question given this paragraph: 19.2 Population Growth and Regulation Populations with unlimited resources grow exponentiallywith an accelerating growth rate. When resources become limiting, populations follow a logistic growth curve in which population size will level off at the carrying capacity. Populations are regulated by a variety of density-dependent and density-independent factors. Life-history characteristics, such as age at first reproduction or numbers of offspring, are characteristics that evolve in populations just as anatomy or behavior can evolve over time. The model of r- and K-selection suggests that characters, and possibly suites of characters, may evolve adaptations to population stability near the carrying capacity (K-selection) or rapid population growth and collapse (r-selection). Species will exhibit adaptations somewhere on a continuum between these two extremes. Q: When resources become limiting, populations follow a logistic growth curve in which the size will level off at a point called what? A:
OPTIONS:
- believed capacity
- full capacity
- containing capacity
- carrying capacity
carrying capacity

Answer the following question given this paragraph: Flammability is the ability of matter to burn. When matter burns, it combines with oxygen and changes to different substances. Wood is an example of flammable matter, as seen in Figure below . Q: What term is used to describe the ability of matter to burn? A:
OPTIONS:
- permeability
- reactivity
- volatility
- flammability

Answer: flammability

Question: Answer the following question given this paragraph: Scavengers are decomposers that consume the soft tissues of dead animals. Examples of scavengers include hyenas and cockroaches. Q: Hyenas and cockroaches are examples of what decomposers that consume the soft tissues of dead animals? A:
OPTIONS:
- parasites
- foragers
- predators
- scavengers
Answer: scavengers

input with options: Answer the following question given this paragraph: Q: Like simple hormone pathways, hormone cascade pathways typically involve what kind of feedback? A:
OPTIONS:
- effective
- positive
- neutral
- negative
output: negative

Q: Answer the following question given this paragraph: The cell membrane consists of two layers of phospholipids. It encloses the cytoplasm and controls what enters and leaves the cell. Q: How many layers of phospholipids does the cell membrane contain? A:

OPTIONS:
- four
- five
- three
- two

A: two

Answer the following question given this paragraph: Figure 20.2 The rate of flow of charge is current. An ampere is the flow of one coulomb through an area in one second. Q: The rate of flow of charge in an electrical circuit is known as what? A:
OPTIONS:
- output
- voltage
- velocity
- current
current