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____ [38]
3 years ago
6

If you find a fossil in two different locations and it has featured in common with dinosaurs and modern birds, how does this sup

port the evolutionary theory?
a) the two species must not be related
b) looking at the fossils, they show similarities both physically and in their DNA that don't appear to change much over time
c) dinosaurs must have evolved from mammals because their bones are similar in size rather than birds
d) the land must have been together at one point where these two species interbred to share a common ancestor
Biology
1 answer:
Naddik [55]3 years ago
7 0
Answer: D

Explanation: the continents wee once connected. It was known as Pangea
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In 1985 a biologist counted 750 pine trees in a 250 hectare forest. Using similar counting techniques, the biologist counted 1,2
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Answer:

Suppose that we have a given function f(x)

The average rate of change of the function between two values x₁ and x₂ is given by:

r = \frac{f(x_2) - f(x_1)}{x_2 - x_1}

a) We want to find the average (rate) of change on the size of population from 1985 to 1995.

We have that:

f(1985) = 750

f(1995) = 1500

Then we have:

r = \frac{1500 - 750}{1995 - 1985}  = 750/10 = 75

This means that the population of trees increases, in average, at a rate of 75 trees per year.

b) What is the density of trees each year that they were counted?

This will be equal to the quotient between the number of trees and the area.

1985: number of trees = 750 pines

         area = 250 ha

Then the density is:

D(1985) = (750 pines)/(250 ha) = 3 pines/ha

So 1985, there were 3 pines per hectare.

1990: number of trees = 1250 pines

         area = 250 ha

Then the density is:

D(1990) = (1250 pines)/(250 ha) = 5 pines/ha

1995: number of trees = 1500 pines

         area = 250 ha

The density is:

D(1995) = (1500 pines)/(250 ha) = 6 pines/ha

3) now we want to get the average change between 1985 and 1995 in the density, this will be:

r = \frac{D(1995) - D(1885)}{1995 - 1985}  = \frac{6 pines/ha - 3pines/ha}{10}  = 0.3 pines/ha

So, on average, each year the number of pines per hectare increases by 0.3

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The viral pathogen that causes cold sores can remain inactive in the body for a long time between disease outbreaks. How is this
Serhud [2]

This disease is classified as a latent disease.

<h3>Classification of diseases</h3>

Latent disease is a classification of disease whereby the infectious agent remains inert in the body of its host between episodes of recurrent diseases.

Examples of viral pathogens that causes latent diseases include:

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Learn more about latent disease here:

brainly.com/question/26971909

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