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
kirill [66]
4 years ago
10

The accumulation of O2 in the atmosphere is due to the:

Biology
2 answers:
zepelin [54]4 years ago
8 0

O2 in atm comes from plants' photosynthesis which is light dependent.

so ans is d. Light dependent reactions

FromTheMoon [43]4 years ago
5 0

c. Light independent reactions

You might be interested in
For the past 2 years, a client has had increasing difficulty remembering the events of the day, but has been able to recall even
SpyIntel [72]

Answer:

Vascular dementia

Explanation:

This is a neurologic condition that is brought about as a result a brain injury caused by ischemic damage e.g ischemic damage with atherosclerosis. Vascular dementia is disease of no known cure but it's effect can be treated or suppressed. It is characterized by patient or client suffering from it to have loss of memory, laughing or crying when it's unnecessary or at awkward times e.t.c it occurs as a result of damage of blood vessels in our brain or break down and it occurs as a result of stroke, diabetes and other factors.

7 0
4 years ago
Read 2 more answers
Black eyes are dominant to orange eyes, and green skin is dominant to white skin. sam, a mendalien with black eyes and green ski
Ilia_Sergeevich [38]
<span>Sam, a mendalien with black eyes and green skin, has a parent with orange eyes and white skin. Sam has a dominant phenotype expressed but he has a parent with a recessive phenotype which means he has a heterozygote gene.

Carole is a mendalien with orange eyes and white skin. Since Carole express both recessive phenotypes she should be homozygote recessive.

The key to this problem is how Sam dominant gene will be inherited. Since there are two heterozygote genes, it will be 50% dominant gene inherited for each phenotype. Then the result should be: 
25% Dominant + Dominant =</span>black eyes and green skin<span>
25% Dominant + Recessive =</span>black eyes and white skin
25% Recessive + Dominant  =orange eyes and green skin
25% Recessive + Recessive =orange eyes and white skin
8 0
3 years ago
Identify this symbol.<br><br> H₂O<br><br> anion<br> cation<br> atom<br> molecule
Vikki [24]

Answer:

molecule

Explanation:

because water aka h20 is a molecule

7 0
3 years ago
Read 2 more answers
During a laboratory experiment, you discover that an enzyme-catalyzed reaction has a ∆G of -20 kcal/mol. If you double the amoun
Anna71 [15]

The correct answer is: B) -20 kcal/mol

Enzymes are catalysts of chemical reactions, they speed up the reaction by lowering the activation energy, but don't affect the ∆G (change of Gibbs free energy). The changes in free energy occurs due to change in concentrations of reactants and products and don't have anything to do with the presence or absence of an enzyme.

6 0
3 years ago
Give 2 examples of how rocks color provide clues
telo118 [61]
Where it came from and if it is a metal or non metal, also what it is used for (coal)
6 0
3 years ago
Other questions:
  • A woman who isn't colorblind but has an allele for color blindness reproduces with a man who has normal vision. What is the chan
    5·1 answer
  • Which of the following body parts has smooth muscles?
    5·2 answers
  • All connective tissue is formed from which embryonic germ layer?
    9·1 answer
  • How organisms living in aquatic environments are limited by both biotic and abiotic factors?
    14·1 answer
  • The only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart
    14·1 answer
  • Question: Laboratory 1: Tools For Scientific Inquiry Questions For Review 1. A Group Of Students Hypothesizes That The Amount Of
    10·1 answer
  • Compare Hills and Plateau<br> I need this in a paragraph <br><br><br> Thank you!
    7·1 answer
  • How many pairs of chromosomes does a human have in their liver cells
    11·1 answer
  • What would happen if the moon took twice as long to rotate around the earth?​
    10·2 answers
  • When scientist copy DNA dean first have to cut out the part thing want to copy what molecule do they use to do this
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!