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
Tresset [83]
3 years ago
5

What ignited the Cambrian explosion of life?

Biology
1 answer:
uysha [10]3 years ago
3 0
Increase levels of oxygen in seawater, evolution of eyes, origin of hard parts, and genetic changes
hope that helps <3
You might be interested in
What happens to biodiversity<br> and ecosystems when the<br> environment changes?
natita [175]
Answer: Loss of biodiversity appears to affect ecosystems as much as climate change, pollution and other major forms of environmental stress, according to results of a new study by an international research team. ... Studies over the last two decades demonstrated that more biologically diverse ecosystems are more productive.hope this helps:)!
3 0
3 years ago
Please answer this question giving brainlest
Dominik [7]

Answer:

2 to 2, 3 to 1, 1 to 4 and 4 to 3

Explanation:

hope that helps

5 0
3 years ago
Frank has Klinefelter syndrome (47, XXY). His mother has normal skin, but his father has anhidrotic ectodermal dysplasia, an X-l
Gala2k [10]

Answer:

b. Frank received the mutant chromosome from his father. Nondisjunction occurred in his father during the first meiotic division.

Explanation:

As you can see in the question above, Frank has Klinefelter syndrome which causes him to have normal skin patches and skin patches without sweat glands. Her mother has completely normal hair, which may indicate that the defective gene was not supplied by her. In addition, Frank's father has anhydrotic ectodermal dysplasia, an X-linked condition where the skin does not contain sweat glands.

Although Frank's father's defective gene is linked to the X chromosome, it is likely that Frank inherited the defective gene from his country. This may have occurred because during meiosis I, his father's genes did not show disjunction. As a result, Frank presents a mosaic of his phenotype, because an inactivation of the X chromosome occurred.

5 0
3 years ago
How is a mean established?
MissTica

Answer:

1 : to institute (something, such as a law) permanently by enactment or agreement. 2 obsolete : settle sense 7. 3a : to make firm or stable. b : to introduce and cause to grow and multiply establish grass on pasturelands.

5 0
3 years ago
The bacteria Lactobacillus acidophilus are frequently used in the production of yogurt. These bacteria use lactic acid fermentat
Shtirlitz [24]

Answer:

A. The bacteria could no longer regenerate the NAD+ needed for glycolysis, so it would stop producing ATP.

Explanation:

According to the given information in this question, Lactobacillus acidophilus is a bacterium species that uses the lactic acid fermentation when there is no oxygen in its cell i.e. under anaerobic conditions. This means that it converts glucose to lactic acid during this anaerobic respiration process.

However, if the lactic acid fermentation pathway were blocked under an anaerobic condition, this means that it will be no longer be able to perform respiration and hence stop production of ATP. This is because the bacteria will no longer regenerate the NAD+ (electron acceptor) needed for glycolysis, so it would stop producing ATP. Note that, all living organisms, whether aerobic or anaerobic, undergo GLYCOLYSIS, which is the first stage of cellular respiration.

5 0
3 years ago
Read 2 more answers
Other questions:
  • 30 POINTS(MORE THAN ONE ANSWER)
    5·2 answers
  • If there was a fungicide that killed all fungi, make a prediction on how that would affect the ecosystem and eventually us human
    9·1 answer
  • A failure to maintain homeostatic conditions in the body is known as
    5·1 answer
  • In the 1990s, epidemiologic studies established that women could reduce their risk of bearing a child with neural tube birth def
    7·1 answer
  • Fill in the blank (this is not multiple choice)
    15·1 answer
  • What are the characteristics of carbon bonds?
    5·1 answer
  • Which type of organelle or structure is primarily involved in the synthesis of oils
    10·1 answer
  • Mrs. Lopez is a chemist who is studying salt crystals. She wants to slow the rate at which the crystals dissolve in a solution o
    8·1 answer
  • Explain why bacteria and archaea are prokaryotic cells and all other organisms are eukaryotic cells
    13·1 answer
  • The P50 for myoglobin is 2.8 torr. At what oxygen concentration will myoglobin be 75% saturated with oxygen
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!