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
Vlad [161]
3 years ago
11

What is a comet and where do comets come from?

Biology
1 answer:
Vladimir [108]3 years ago
4 0

Explanation:

1. a comet is an icy small solar system body that when passing close to the Sun warms and begins to release gas has a process called outgassing. this produces a visible atmosphere, and sometimes also a tail.

2. comets have two sources. long period comets originate from the Oort cloud. short period comets originate from the Kuiper belt

You might be interested in
Enzymes increase the rate of a given reaction by lowering what energy?
goblinko [34]
Enzymes increase the rate of a given reaction by lowering Activation E<span>nergy. Hope that helps.</span>
7 0
3 years ago
HURRY! I ONLY GOT SO LONG
Semenov [28]

The best descriptions are those that correctly describe the terms or concepts ecology.

<h3>Which descriptions best fit the given terms?</h3>

The study of living things and their non-living is ecology.

The description of a given term provides information about that term or concept.

The best description of the given terms are as follows:

  1. Mutualism - a relationship where both organisms benefits
  2. Commensalism - a a relationship where one organism benefits and the other is unaffected
  3. Producers - organisms that make their own food
  4. Food web - show energy flow in an ecosystem
  5. Biome - a large area defined by climate and organisms that live there
  6. Stability - ability of an ecosystem to respond to change
  7. Exponential - growth pattern at constant rate
  8. Carrying capacity
  9. Food chain
  10. Limiting factor
  11. Parasitism
  12. Trophic levels
  13. Biodiversity
  14. Abiotic factors
  15. Population
  16. Climate
  17. Biosphere
  18. Consumers
  19. Keystone species
  20. Community

Therefore, the best descriptions are those that correctly describe the terms or concepts.

Learn more about ecology at: brainly.com/question/15971107

#SPJ1

7 0
2 years ago
Photosynthesis takes place in the membranes of small sacs called
musickatia [10]
The answer is A- thylakoids
6 0
3 years ago
Which of the following best describes an aspect of a membrane's molecular structure that causes it to be selectively permeable?
atroni [7]

Answer:

<u>d. Transport proteins within the membrane serve as a tunnel for molecules to enter the cell. </u>

<u />

Explanation:

Solutes are typically moved across the cell through either passive or active transport. The cells, surrounded by a bilipid layer or plasma membrane is amphiphlic- its polar, hydrophilic lipid heads face outwards, while their non-polar hydrophobic lipid tails face inwards towards each other.

While lipid-soluble molecules move across the layer easily, it is also difficult for charged and also large molecules to move across its surface, into the cell. Transmembrane channels, <u>embedded within the membrane</u>, help to maintain selective permeability as transport proteins, pores and gated channels. Simple diffusion happens as a method of passive transport in cells through plasma membranes.

The solutes travel through the plasma membrane in the process of diffusion from regions of high concentration to regions of low concentration; this occurs without the use of energy. <u>Molecules moving against their concentration require active transport mechanism to cross the membrane</u>.

3 0
3 years ago
The dense area of a cell that contains nucleic acid is the.......
torisob [31]
I think the answer is NUCLEUS.

Hope it helps!
4 0
3 years ago
Read 2 more answers
Other questions:
  • A patient is in need of hydration. Which type of solution are the patient’s cells most likely in?
    7·2 answers
  • Can someone please help me
    7·1 answer
  • Which of the following statements is most true regarding macromolecules and their functions?
    12·2 answers
  • Which statement correctly describes the diagram?
    7·2 answers
  • (Fill in the blank) In comparing DNA and structural characteristics between plant species, the similarities that appear may indi
    9·1 answer
  • Order the following from least complex (smallest) to most complex (largest)
    13·1 answer
  • Write a sentence with scientific law in it
    8·1 answer
  • Why is genetic diversity important?
    12·2 answers
  • 17. The ff. are true of ligands
    8·1 answer
  • Which statement best describes how artificial selection can decrease a population's biodiversity?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!