Which statements are true about "evidence"?

Can you guys answer this question please and explain why, ASAP, thanks will mark brainliest

LenKa [72]

Answer:

An increase in the number of snakes

Explanation:

From the food web, the only way for frog population to increase is:

1) increase of cricket population. (increased food source)

2)decrease of hawks population (less predator)

An increase in snake population will result in mice population to fall as more snakes will hunt and feed on the mice. This causes lesser mice to feed on grasses. Resulting in increased food for crickets. As time passes, due to sufficient food, cricket population will increase which in turn increases the amount of food available for frogs to eat.

Assuming the number of predators remain constant and amount of crickets (food) increases, more frogs will survive to maturity and reproduce, causing the amount of frogs to increase.

5 0

4 years ago

Read 2 more answers

The hallmark feature of an analytic epidemiologic study is?

Harrizon [31]

The hallmark feature of an analytic epidemiologic study is the use of an appropriate comparison group.

Analytic epidemiology is the study concerned with tracking causes and effects, or the why and the how of a particular disease. Epidemiologists use analytic epidemiology to define the relationship between exposures and effects and to test assumptions about causal relationships.

Comparison groups are very important in an epidemiologic study they are used to approximate the counterfactual data defining how the disease would have progressed without the intervention. The more similar that comparison group is to the subject group, the stronger the evaluation can be.

To learn more about epidemiology here

brainly.com/question/8822335

#SPJ4

7 0

1 year ago

Compare positive and negative feedback mecha- nisms in a living and non-living system

Slav-nsk [51]

Positive feedback: breast feeding, giving birth, and blood clotting are two examples.

Negative feedback: Blood glucose levels, temperature control, and body temperature are two examples.

-Negative feedback: accumulation of an end product of a process slows that process.

-Positive feedback: the end product speeds up its own production. Regulation is important because without it we would bleed out from small cuts because we wouldn't be able to form blood clots. Or we wouldn't be able to form ATP. Regulatory mechanisms help us do the important tasks needed to sustain life.

Hope this helps! :)

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8 0

3 years ago

Classify each example or description into the correct evolutionary mechanism.

svetlana [45]

Among evolutionary mechanisms, there can be mentioned non-random matings (1 and 8) , mutations (3 and 6), genetic drift (2, 4 and 5), and genetic flow (7).

<h3>What are evolutionary mechanisms?</h3>

These are different mechanisms that change allelic frequencies and genotypic frequencies conserning the expected ones if populations were under Hardy-Weinber equilibrium.

When these mechanisms are going on, populations evolve.

Among them, we can mention,

Non-random matings
Mutation
Genetic drift
Genetic flow

In the attached files you will find a better explanation about evolutionary mechanisms

Examples classification,

1) non-random matings

2) Genetic drift - founder effect

3) Mutation

4) Genetic drift - founder effect

5) Genetic drift - bottleneck effect

6) mutation

7) Genetic flow

8) Non-random mating

You can learn more about evolutionary mechanisms at

brainly.com/question/937974

brainly.com/question/10471625

brainly.com/question/73154

Download pdf

4 0

2 years ago

Different measures of disease are useful to evaluate and assess public health programs and needs in different situations. For ea

olga nikolaevna [1]

Answer:

Different Measures of Disease

Question Measure of Disease

a. I = incidence rate

b. P = prevalence

c. L = lifetime prevalence

d. L = lifetime prevalence

e. M = crude mortality rate

Explanation:

a) Measures of disease:

I = incidence rate (p. 126): measures the frequency of disease occurrence in a population over time. It is measured as new episodes of illness in a period divided by the population.

P = prevalence (p. 113): ratio or proportion of persons in a population with a disease at a time or over time. It is based on a sample.

L = lifetime prevalence (p. 114): the proportion or ratio of a population who had a disease at some point in their life.

M = crude mortality rate (crude death rate) (p. 112): the ratio of deaths in a period among a geographical population.

R = sex ratio (counts) (p. 109): ratio of male and female population.

8 0

3 years ago