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MissTica
2 years ago
6

According to the basic host–pathogen model, if the combined death and recovery rate from a disease doubles, and the effectivenes

s of the disease to spread from infected to uninfected individuals remains the same, the threshold density should
A. decrease by half.
B. stay the same.
C. double.
D. decrease by a factor of four.
Biology
1 answer:
S_A_V [24]2 years ago
6 0

Answer:

A. decrease by half.

B. stay the same.

C. double.

Explanation:

Host-pathogen models resembels the host-parasite models and predator-prey which is used to evaluate the evolutionary strategies of pathogens.

The host-vector-pathogen system can be demonstarted as a change in the number of 4 types of people: healthy hosts, uninfected vectors, infected hosts, and infected vectors.

The threshold density should decrease by half, stay the same, or double, according to the standard host-pathogen model, if the combined death and recovery rate from a disease doubles, and the ability of the disease to spread from infected to uninfected persons.

Hence, the correct options are A. decrease by half, B. stay the same, and C. double.

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According to Piaget's theory of cognitive development, which of the following is true of children in the concrete operational st
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Answer:

A. They center on the motives of wrongdoers as well as on the amount of damage done when assigning blame.

Explanation:

The Concrete Operational Stage, according to Piaget, refers to a stage that begins around age 7 and ends around the ages of 11 or 13.

During this stage, children are now capable of thinking in a more logical manner and their moral judgement has become subjective as <u>they now center on the motives of wrongdoers as well as on the amount of damage done when assigning blame</u>. For instance, they are able to judge another child according to the amount of damage she/he has done and whether it was done in purpose or accidentally.

They can also center on two dimensions of a problem at once and have thoughts that involve tangible objects instead of abstract ideas.

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2 years ago
Why is it a strategic advantage to have a huge group of worker bees per single queen bee?
seropon [69]

Answer:

it is that worker bee's work for the queen bee because the queen bee is really old while the worker bee's are young

Explanation:

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2 years ago
What was galilos contribution to the study of motion?​
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3 years ago
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3 years ago
What three elements do all macromolecules share? Explain how the chemical properties of lipids, nucleic acids, proteins, and ami
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Answer

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1. Carbohydrate,

2. Proteins

3. Lipids, and  

4. Nucleic acids.  

Elements they common share

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1. Carbon

2. Hydrogen, and

3. Oxygen.  

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Difference in Chemical properties

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