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
Ksenya-84 [330]
3 years ago
13

Stellar evolution is _____.

Biology
1 answer:
Ilya [14]3 years ago
7 0

Answer:

The process of a star changing overtime.

You might be interested in
Describe the differences between the sporophyte and gametophyte generations of seedless tracheophyte plants and be sure to discu
kykrilka [37]

Answer and Explanation:

Tracheophyte plants, also known as vascular plants, are those that possess a supportive tissue that can also conduct fluids -The Xileme- and another tissue that conducts nutritious elements produced by photosynthesis -The Phloem-. These plants have a root (basically underground), a stem (aerial), and leaves. All of them together form the corm. And the corm counts with these vascular tissues to which we referred before.  

There are different types of Tracheophyte plants, some of them produce seeds to reproduce and disperse -Spermatophyta-  and some others reproduce and disperse by spores -Pteridophyta-. This last seedless group corresponds to ferns and other similar plants.

Pteridophytes characterizes for having a sporophyte that has stems with leaves and a root. It also has primitive xylem composed by tracheids and phloem, both of them formed by vascular bundles located in a central cylinder.

Spores are its dispersion units and are responsible for colonizing new areas. They also constitute the resistance units under extremely unfavorable conditions.  

Their life cycle is composed of the asexual phase (sporophytic phase) and the sexual phase (gametophytic).  

  • The <u>sporophyte</u>, the dominant asexual generation, it is a perennial and diploid structure. Its aerial part might disappear during unfavorable seasons, but it reappears during spring or summer.  The sporophyte is in charge of asexual reproduction
  • The<u> gametophyte</u>, instead, is and haploid structure, ephemeral and must be in the water for its survival, and for sexual reproduction to be successful. In the presence of water, masculine gametophyte -antherozoids- are released and they swim to the archegonium to meet the ovocell. Antherozoids can swim because they have flagella. After fertilization, a new sporophyte is produced.  

3 0
3 years ago
Aspirin and other nonsteroidal anti-inflammatory drugs (NSAID) inhibit inflammation by inhibiting an enzyme in the prostaglandin
lisov135 [29]

Answer: The enzyme is found in different types of cells.

Explanation:

The result that can be concluded is that this enzyme is found in different types of cells. This is the reason that the medicines like aspirin and other non-steroidal anti inflammatory drugs inhibit the prostaglandin pathway and other pathways too.

These medication acts on the enzymes and it will act in the cells where this enzyme will be present. Hence, the enzyme is acting in different types of cells.

8 0
3 years ago
ammals that live in the Arctic Ocean have a large amount of blubber, which is a fatty tissue just beneath the skin. Which statem
frosja888 [35]
The arctic environment is deathly cold, hence the thick blubber on animals so they can handle freezing temperatures
4 0
3 years ago
You expect interstitial endocrinocytes (interstitial cells of Leydig) to be rich in which of the following? Interstitial endocri
Rama09 [41]

Answer: B) Rough endoplasmic reticulum

Explanation:

7 0
3 years ago
List 5 ways we can help the ocean and the organisms living in it.
mamaluj [8]

Answer:

1. Reduce Pollutants

2. Conserve Water

3. Eat sustainable seafood

4. Don't purchase items that exploit marine life

5. Don't throw trash into the ocean

Hope this helps :)

8 0
2 years ago
Read 2 more answers
Other questions:
  • Which was first launched during the Space Race?
    11·1 answer
  • Pure chlorine is an example of a(n) _____.<br><br> element<br> compound<br> mixture<br> solution
    11·2 answers
  • 10 Points
    8·2 answers
  • The endocrine system plays an important role in the body by influencing every organ and cell. Please select the best answer from
    9·1 answer
  • In his science class, mr. brown heats a small amount of iodine in a test tube. the iodine changes into a pink gas without changi
    14·2 answers
  • 15. A bug flies into a car's windshield. Describe the force of the windshield to the bug and the force
    7·1 answer
  • Which genetic technology is shown in the diagram?
    7·2 answers
  • When cells begin to divide, chromatin strands coil and condense to structures called _____.
    11·1 answer
  • The amniotic egg, which is present in reptiles, birds, and mammals, is a good example of: horizontal gene transfer. coevolution.
    9·1 answer
  • chordates are distinguished by the presence of a muscular tail, notochord, and dorsal nerve cord. what is the functional signifi
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!