1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
geniusboy [140]
3 years ago
9

The universe is often described as “clumpy” with dense groups of matter separated by empty space. A single clump made of billion

s of stars is known as a
A) galaxy.
B) nebula.
C) light year.
D) solar system.
Biology
1 answer:
Kipish [7]3 years ago
5 0

A. Galaxy. is the correct answer. a galaxy is a colossal grouping of solar systems, and stars that slowly orbit each other, and other galaxies.


B. nebula. is incorrect. a nebula is a large collection of dust and small meteoroids.

C. light year. is not correct. light year- a large unit of distance, often used when measuring the distance between galaxies.

D. solar system. is incorrect. solar system- a group of planets and a star.

You might be interested in
HELP PLEASE!!!! which of these is closest to the number of molecules of ATP we get from Anaerobic metabolism of one molecule of
dalvyx [7]
You get 2 ATP molecules from anaerobic metabolism
8 0
3 years ago
Define photosynthesis for 2 marks<br>​
8_murik_8 [283]

Answer:

Explanation:

the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.

5 0
3 years ago
How do feedback signals affect the cell cycle ?
iris [78.8K]

Answer:

The cyclins activate the CDKs, which affect the cell cycle at three important checkpoints: Late in the G1 stage of the cell cycle, triggering the cell to move into the S phase.

Explanation:

5 0
3 years ago
There are three major groups of mammals, categorized on the basis of their _____. see concept 34.6 ( page 739)
zmey [24]
<span>There are three major groups of mammals, categorized on the basis of their method of reproduction. Monotremes lay eggs to have children instead of having the mother bear them. The second type of mammal is the marsupial, which are non-placental animals who carry their young in their pouches. Eutherians are the third group who are placental mammals.</span>
4 0
3 years ago
How does the carbon and nitrogen cycle work together?
masha68 [24]
The carbon cycles recycles caronatoms(carbon dioxide) and the nitrogen cycle recycles nitrogen.and the carbon cycle makes carbon dioxide and the carbon dioxide goes to the trees ,and the trees get the nitrogen and starts the cycle again.
5 0
3 years ago
Other questions:
  • Identify the abiotic limiting factor from the choices below.
    10·2 answers
  • Which factors that affect personal health are the most easily controlled?a.geneticb.environmentalc.lifestyled.global
    11·1 answer
  • How has the discovery of DNA helped us? Please give as much detail as possible.
    14·1 answer
  • Human spermatozoa:
    8·2 answers
  • The majority of Earth is covered with water. Water takes longer to heat up and cool down which has an impact on the air temperat
    14·1 answer
  • The term for the role a organisms has in the community
    10·1 answer
  • Drag each label into the appropriate position to identify whether the characteristic is indicative of arteries or veins. mcrow h
    6·1 answer
  • A bacterium is infected with an experimentally constructed bacteriophage composed of the t2 phage protein coat and t4 phage dna.
    8·1 answer
  • 2. Which of the following is an example of evaporation?
    14·1 answer
  • Which of these disorders is an open sore on the lining of the digestive tract?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!