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dlinn [17]
2 years ago
13

The Milky Way is held together by a black hole's gravitational force. Since the stars near this black hole move at a high speed,

what can you infer about the black hole? A. Its location B. Its depth C. Its speed D. Its size
Biology
2 answers:
jasenka [17]2 years ago
6 0

Answer:

A.

Explanation:

MariettaO [177]2 years ago
4 0

Answer:

A. Location

Explanation:

A black hole is a massive structure in the space from which light cannot escape. Therefore, <u>the depth of the black hole (B), the speed (C), and size (D) are extremely difficult to measure</u>. However, scientists have been able to locate the position of black holes via the movement of stars and gases around it. Typically, since black holes are extremely dense objects, masses spins around the black holes and form a structure called an accretion disk. By looking at the speed of stars, the scientists can detect where the black holes are in the space.

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Juan has been diagnosed with mono, and the doctor wants to determine if his spleen is enlarged. Where (quadrant, etc.) will the
hichkok12 [17]

Answer and Explanation:

  • Where (quadrant, etc.) will the doctor palpate Juan's abdomen?

<em>Under normal conditions in general the spleen can not be palped because of its reduced size. But when it is enlarged it might be easily touched. The spleen is located under the thoracic cage (rib cage) on the left side, between the 8th and 11th ribs. This would correspond to the left superior quadrant (left hemi-belly).</em>

  • What other organs might be compressed by Juan's enlarged spleen?

<em>The enlargement of the spleen and the liver inflammation are symptoms of the mono disease. This enlargement might affect some neighboring organs such as the stomach, which might be displaced and compressed. </em>

  • why is Juan's spleen enlarged and not his stomach or kidney?

<em>The spleen is part of the immunological system and helps the body to fight infections and filter old bloody cells taking them out of the blood current. This organ might get enlarged because blood cells accumulate in its interior. Red blood cells are excessively stored in the spleen, resulting in anemia. The more cells the spleen retains, the larger it becomes, and hence, the more blood cells it retains and destroys. If the spleen is unproperly working, it kills too many red blood cells and accumulates many others.</em>

The Stomach and kidney are not part of the immunity system and they do not filter blood cells, so they do not seem to be affected by their accumulation.

6 0
2 years ago
A scientist studied four pieces of fossil evidence that show the evolution of the modern-day man. These date back to 2 million y
torisob [31]

Answer:

D 2 million years  is the answer

Explanation:

3 0
2 years ago
Susan is planting her garden and choosing plants at the local plant nursery. She tells the clerk that she wants to plant perenni
Elan Coil [88]

Answer:

C) Sprout every year, year after year

Explanation:

A perennial plant or simply perennial is a plant that lives more than two years. Some sources cite perennial plants being plants that live more than three years. The term is often used to differentiate a plant from shorter-lived annuals and biennials.

8 0
2 years ago
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A cyclin called cyclin E forms a complex with a cyclin-dependent kinase called Cdk 2. This complex is important for the progress
Thepotemich [5.8K]

Answer:

B. The amount of unbound cyclin E is lowest as the cell enters S.

Explanation:

The reproduction of the cell is a cycle that it regulates by itself, depending the  demand of a certain cell.

In the case of the mitosis, in Each change from G1 to S to G2 to M is regulated by some proteins like the cyclin.

In the case of the cdK2 is ncessary to pass the control point to pass from the stage G1 to the stage S.

Another characteristic of the cyclins, is that these proteins are synthetized and degraded constantly during the hole process.

Hope this is a useful info

8 0
2 years ago
Specialized cells in plant roots ensure that they grow down into the soil to find water and nutrients. This plant response by sp
ElenaW [278]
Here is the answer that would best complete the given statement above. Specialized cells in plant roots ensure that they grow down into the soil to find water and nutrients. This plant response by specialized cells is calledGRAVITROPISM. This is also known as geotropism wherein plants grow in response to gravity. Hope this answer helps. 
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2 years ago
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