answer.
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
denis-greek [22]
1 year ago
6

Which event triggers the start of black hole formation?

Biology
1 answer:
docker41 [41]1 year ago
8 0

Answer:

A stellar-mass black hole forms when a star with more than 20 solar masses exhausts the nuclear fuel in its core and collapses under its own weight. The collapse triggers a supernova explosion that blows off the star's outer layers.

Explanation:

You might be interested in
Living organisms must acquire energy from their environment. Examples of adaptations that help organisms acquire this energy inc
krek1111 [17]

Answer:

The correct answers are Option A and B

Explanation:

A. The dark, heat-absorbing coloration of a reptile.

B. The fangs and claws of a lion

3 0
2 years ago
Tom wants to improve the amount of recycling in his city. Which initiative should he propose?
oksano4ka [1.4K]

Answer:

If you want to improve the amount of the recycling in your city, Tom need to implement a lot of initiatives and the following on this question isn't the right way to do it.

Explanation:

    Whether Tom wants to improve the amount of recycling in his city, he need not to ban all plastics. What he must to do is to take plastics from houses, companies, supermarkets and other places that use this kind of material and recycle them, and change them in other products to back to the society or community. Besides recycle, he need to contact the local authority to make  recycling campaigns. That's the reason to close grocery stores on Sundays isn't the right way to do in this situation. If he are wishing to close all landfills, isn't the right option to do, because you have to implement a good landfills and make it works in a right way, because is important to have an  sustainable landfill without creating environmental pollution for the community, local population and the planet. But to do all of these things explained above, you have to obtain investiment and money throughout the authorities,  governments or maybe  businessmen from big companies.

6 0
2 years ago
Which of these is the dependent variable?
melisa1 [442]

Answer:

The answer is B.

Explanation:

The variable is dependent meaning it stands on its own. the sentence "I skipped dinner" is a stand alone sentence meaning its the answer

5 0
2 years ago
Read 2 more answers
A biologist at World University used Procedure IV to conduct an additional study and found the sequence following below. Using y
Nady [450]

Answer:

Valine-Leucine-Proline-Lysine-Histidine

Explanation:

The central dogma of biology is the process by which DNA is used to synthesize RNA and subsequently amino acid sequence (PROTEIN). The processes of transcription and translation is used in gene expression. Transcription is the process whereby the information encoded in a DNA molecule is used to synthesize a mRNA molecule. Transcription is catalyzed by RNA polymerase enzyme, which uses complementary base pairing rule i.e Adenine(A)-Thymine(T), Guanine(G)-Cytosine(C) pairing.

N.B: Thymine is replaced by Uracil in the mRNA

For the above DNA sequence: CAC GAC GGA TTC GTA, the mRNA sequence will be: GUG CUG CCU AAG CAU

Translation is the second process of gene expression which involves the synthesis of an amino acid sequence from an mRNA molecule. The mRNA is read in a group of three nucleotides called CODON. Each codon specifies an amino acid (see attached image for genetic code)

Based on the attached genetic code, an mRNA sequence: GUG CUG CCU AAG CAU will encode an amino acid sequence: Valine(Val) - Leucine (Leu) -Proline (Pro) -Lysine (Lys) - Histidine (His).

GUG specifies Valine amino acid

CUG specifies Leucine amino acid

CCU specifies Proline amino acid

AAG specifies Lysine amino acid

CAU specifies Histidine amino acid

5 0
2 years ago
Select the statements that explain why duplication is a driving force for evolution and the generation of new genes.
Paha777 [63]
<span>It is vitally important to life, any form of life. Life in it's self is what we are all striving to grasp, hold and not let escape. It is the endless search for meaning to understand and comprehend. Evolution which is the symphonic struggle of nature to overcome and create the most suitable specimen ensuring its survival within its species from its predators and the world at large. Duplication is natures way to regenerate and strengthen the gene pool of species. It allows newer generations to improve on the genes to enable it to adapt better to the current environment is is facing. It is a constant and never ending process.</span>
4 0
2 years ago
Read 2 more answers
Other questions:
  • What term refers to organisms magnified with a microscope
    8·1 answer
  • Why do eukaryotic cells require mitochondria?
    9·2 answers
  • Using microscope slides and dipping them into the boiling hot springs at Yellowstone National Park, scientists were able to coll
    11·2 answers
  • In this diagram of a long bone, which type of bone marking is circled?
    14·2 answers
  • A group of students form a Healthy Earth club at their school. Their goal is to limit their school’s impact on human-led climate
    10·2 answers
  • The cell membrane regulates and controls what kind of ________ move in and out of the cell.
    5·1 answer
  • Theoretical and experimental measurements show that in many cases, the contributions of ionic and hydrogen-bonding interactions
    15·2 answers
  • The algae, walleye pollock, and orca populations could have all affected the moon jelly population. What additional evidence do
    15·2 answers
  • Imagine that after the birds have been living in the city for many years a second big flock of birds arrives. How will the bird
    8·1 answer
  • A new golf course is built next to a river. Over the past several months, the nitrate levels of the water in the river have been
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!