An acute, contagious respiration infection is called rhinitis or what?

Which level of Ecology explores the relationships among different species and the environment?

vichka [17]

Answer:

I an expert in Biology, trust me.

I an expert in Biology, trust me.Your answer is Ecosystems.

Explanation:

An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts.

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And if you have any questions do not hesitate to ask.

8 0

2 years ago

Question 16

nika2105 [10]

Answer and Explanation:

The Cretaceous–Paleogene extinction, which occurred around 66 million years ago, is defined as a mass extinction that wiped out around three-quarters of species on Earth.

Among the organisms that disappeared during this event, we find mammals, birds, fish, sharks, pterosaurs, birds, reptiles, insects, and some plant species.

This event is marked by the presence of a sediment layer known as the K-Ph boundary which showed important levels of iridium, an element that is abundant in craters. Therefore, after its discovery, scientists hypothesize this extinction occurred due to the impact of the giant Chicxulub crater which changed the conditions of the atmosphere.

5 0

4 years ago

within a forest ecosystem, there is a large amount of diversity among members of a warbler species. of the following stages of m

anzhelika [568]

Crossing over occurs between homologous chromosomes, and is closely involved in genetic variation. The stage that most contributes to diversity is stage C, where you can see chromosomes after crossing-over.

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There are different mechanisms involved in producing genetic variation among descendants. These are,

Crossing-over between homologous chromosomes (prophase 1),

Random lining of homologous chromosomes (metaphase 1),

Random fertilization

The Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one.

The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants.

After crossing over, homologous chromosomes get separated again.

In the attached imaged there are four different stages of meiosis.

Stage C is the one that contributes the most to diversity.

We can see that crossing over has already occurred between homologous chromosomes, and they have already interchanged segments.

In the image you will see the difference between chromosomes that has gone through the crossing over mechanism, and chromosomes that has not. The difference in color represents segments interchange and variation.

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You can learn more about crossing over at

brainly.com/question/12911831?referrer=searchResults

brainly.com/question/394891?referrer=searchResults

6 0

2 years ago

Minerals have a crystal structure, yet, crystals are relatively rare. What are the reasons for this?

Kaylis [27]

Erosion and mixed composition. Wind,rain have a way of mixing and can create crystals

3 0

3 years ago

Read 2 more answers

A client comes to the emergency department with pressure in the chest and shortness of breath. the client is admitted for observ

iogann1982 [59]

Myocardial infarction or MI is also known as heart attack. This happens when the blood flow decreases due to blockage in the arteries causing ischemia in the heart secondary to poor oxygen. The symptoms include chest pain that can radiate to the shoulder,back,arm jaw and neck. This is one of the assessment finding the nurse should monitor.

5 0

3 years ago