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natita [175]
3 years ago
5

What unit of time on Earth is based on the revolution of the Earth around the Sun? A. Day B. Hour C. Year D. Month

Biology
2 answers:
goldfiish [28.3K]3 years ago
8 0
The year is based off of Earth’s revolution around the sun. 1 year is equal to the amount of time that it takes for Earth to revolve once around the sun.
Bezzdna [24]3 years ago
7 0

Answer: Year

Explanation:

Revolution of the earth can be defined as the time which is taken by the Earth to move around the sun. The rotates on its own axis and revolves around the sun.

It takes 365 days and 6 hours by the earth to move around the Sun. It moves on a fixed path known as the orbit.

The 6 hours gets added every year and after 4 years it becomes 1 day and forms a leap year which has 366 days.

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Why is the cell the lowest level of biological organization the that can maintain life?
Leya [2.2K]

Answer:

It's the lowest level of biological organization that can survive and reproduce as long as appropriate conditions are achieved.

Explanation:

5 0
3 years ago
Which of the following organisms arose during the Mesozoic Era? a. mammals c. insects b. birds d. salamanders
Harlamova29_29 [7]
<h2>Answer:</h2>

The Mesozoic era is featured by the arousal of <u>b. birds</u>.

<h2>Explanation:</h2>

The Mesozoic Time is the age of the dinosaurs and kept going nearly 180 million a long time from around 250 to 65 million a long time back. It includes periods called the Triassic, Cretaceous, and Jurassic periods. A mass-extinction stamped the starting and conclusion of the Mesozoic Period. The occasion that caused the move from the Paleozoic time to the Mesozoic period was the most prominent termination this soil has seen.  

There's noteworthy prove that birds developed inside theropod dinosaurs, particularly, that winged creatures are individuals of Maniraptora, a category which belongs to dinosaurs period.

8 0
3 years ago
Help me with science plz​
belka [17]

Answer:

whats the question

Explanation:

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8 0
2 years ago
Which describes HIV that causes AIDS?
ioda

B. answer is correct. HIV that causes AIDS has RNA instead of DNA.

HIV is actually a retro-virus.

Acquired immunodeficiency syndrome (AIDS) is a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV). By damaging your immune system, HIV interferes with your body's ability to fight the organisms that cause disease. The human immunodeficiency virus (HIV) is a lenti-virus (a subgroup of retrovirus) that causes HIV infection and over time acquired immunodeficiency syndrome (AIDS).

7 0
3 years ago
The medullary cavity is Select one: a. empty in adult bones. b. the site where osteoblasts are found. c. lined with endosteum. d
katrin [286]

Answer:

C- Lined with Endosteum

Explanation:

The medullary cavity, also called the marrow cavity, stores red and yellow bone marrow (or adipose tissue). It is the central cavity in the shaft of bones.

Endosteum lines the inner surface of the medullary cavity. It is a thin, vascular membrane of connective tissue with the purpose of being absorbed when a person is malnourished.

6 0
2 years ago
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