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love history [14]
3 years ago
5

PLEASE HELP ME PLEASE!!!

Biology
2 answers:
inna [77]3 years ago
6 0

Answer:

D. The oldest rock is found in the bottom layer of a rock formation.

Explanation:

Aleksandr-060686 [28]3 years ago
6 0

Answer:

I think its B

Explanation:

a basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.

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A scientist wanted to see if the number of eggs in a nest varied according to latitude. She decided to study a specific species
77julia77 [94]

Answer:

A. Does the number of eggs in a nest of this bird species vary with the latitude of the area the bird lives in?

B. The latitude of the area

C. The number of eggs

D. The species of the bird

E. The number of the bird eggs in a nest in a temperate zone area will be greater than that of a tropical area.

F. 600 nests

G. The number of eggs

Explanation:

A. In the investigation, the scientist wanted to see if the number of eggs in a nest varied according to latitude, therefore, the question she will be seeking an answer to is: does the number of eggs in a nest of this bird species vary with the latitude of the area the bird lives in?

B. The independent variable is the variable that is not affected by the other variables being measured in an investigation. In the investigation by the scientist, the latitude of an area is the independent variable in that it is independent of changes in the other variable- the number o eggs- in the investigation.

c. The dependent variable is the variable that is affected by changes to the other variable in an investigation. The number of eggs is expected to vary according to latitude, is therefore, it is the dependent variable.

D. The constant is the factor that does not change during the experiment. The bird species is the constant as it does not change in the investigation.

E. A hypothesis is a specific statement predicting the result of an investigation or study.

In this study, the hypothesis could be: The number of the bird eggs in a nest in a temperate zone area will be greater than that of a tropical area.

F. The sample size gives the the total number of subjects,  individuals or observations in a study. In this case, the subjects are bird nests, and the sample size is 600 nests.

G. The number of eggs in all the nests were counted; therefore, it is the repeated measure.

7 0
3 years ago
An adolescent girl with a seizure disorder refuses to wear a medical alert bracelet. what should the nurse tell the girl that ma
Tom [10]
Select a bracelet similar to bracelets worn by her peers 
6 0
4 years ago
What is the pressure in the lungs when inspiration is occurring?
scoundrel [369]
This increase in volume leads to a decrease in intra-alveolar pressure, creating apressure<span> lower than atmospheric </span>pressure<span>. As a result, a </span>pressure<span> gradient is created that drives air into the </span>lungs<span>. Figure 3. </span>Inspiration<span> and expiration </span>occur<span> due to the expansion and contraction of the thoracic cavity, respectively.

</span>
5 0
4 years ago
Question: How do different variations lead to evolution of species?
Trava [24]

Answer:

Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes.

7 0
3 years ago
Read 2 more answers
Please help me!!!! Describe industrial melanism and the effect it had on peppered moths.
Tema [17]

Answer:

The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. The frequency of dark-coloured moths increased at that time, an example of industrial melanism.

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3 years ago
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