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
Natali [406]
3 years ago
15

How have atmospheric carbon levels changed?

Biology
1 answer:
Mandarinka [93]3 years ago
4 0

Answer:

Climate Change: Atmospheric Carbon Dioxide. The global average atmospheric carbon dioxide in 2018 was 407.4 parts per million (ppm for short), with a range of uncertainty of plus or minus 0.1 ppm. ... Carbon dioxide concentrations are rising mostly because of the fossil fuels that people are burning for energy.

You might be interested in
Need help on this one please
DanielleElmas [232]

Answer:

the last one house cats lions and tigers belong to the same class abd and family

8 0
3 years ago
Lesch-Nyhan syndrome is an X-linked, recessive condition caused by mutation of the HPRT1 gene responsible for purine metabolism.
Elanso [62]

Answer:

B. The father did not contribute a sex chromosome to his daughter due to nondisjunction of the sex chromosomes. The daughter is XO and her only X chromosome came from her mother, who was a carrier.

A.The mother's X chromosomes failed to separate during meiosis, and the daughter inherited two X chromosomes with the Lesch-Nyhan mutation. The father contributed no sex chromosomes.

Explanation:

As seen in the question above, a little girl was diagnosed with Lesch-Nyhan syndrome, which is an X-linked recessive condition caused by a mutation in the HPRT1 gene responsible for purine metabolism.

The little girl's parents do not have the syndrome, and no one in the little girl's paternal family presented this syndrome, however, we know that the maternal grandfather of the little girl's mother had the syndrome, which means that it was the mother's genetic material that contributed to the development of the syndrome in the little girl. This was because the little girl did not receive any X chromosomes from her father, but she inherited the two X chromosomes from her mother that coded for the Lesch-Nyhan mutation. This happened because the mother's X chromosome disjuction did not occur during meiosis I.

As shown above, the father did not contribute any sex chromosomes to his daughter, which means that the daughter is XO and her only X chromosome came from her mother, who was a carrier.

3 0
3 years ago
Rhythm is how the beat is broken down into blank and blank<br>Noise<br>Silence <br>Sound <br>Rest ​
aliina [53]
Sound and rest I think
7 0
2 years ago
Read 2 more answers
In prokaryotes that carry out aerobic respiration, the ________ serves the same purpose as the inner mitochondrial membrane and
DENIUS [597]

Answer:

In prokaryotes that carry out aerobic respiration, the <u>plasma membrane</u> serves the same purpose as the inner mitochondrial membrane and the <u>cytoplasm</u> serves the same purpose as the mitochondrial matrix.

I'm sorry! I only know those two. I hope this helps anyway!

8 0
3 years ago
Which best describes the function of the circulatory system
shutvik [7]

Answer:

b) to deliver nutrients and other essential materials to cells

6 0
2 years ago
Read 2 more answers
Other questions:
  • Plate tectonics may affect organic evolution because movement of plates may cause a change in ____.
    9·2 answers
  • What does a food chain due ?
    15·2 answers
  • The sea anemone has stinging tentacles this is an example of
    13·2 answers
  • What does crenate mean
    8·2 answers
  • The "bottom-up" process by which our sense receptors receive stimulus energy from the environment, transduce them into a neural
    12·1 answer
  • Sort the mutations based on whether their effects are harmful, beneficial, or neutral to the organisms that experience them. a m
    13·2 answers
  • Which phrase describes the composition of the outer planets
    11·1 answer
  • What are the secretions produced by the inner lining of the stomach and explain their functions.
    7·1 answer
  • Oxygen is a by-product of ______________ and is needed by living organisms for the process of ______________.
    10·1 answer
  • 1. What do epidemiologists study?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!