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
lorasvet [3.4K]
3 years ago
12

What is Earth's major source of air pollution?

Biology
2 answers:
irga5000 [103]3 years ago
7 0
Stationary sources

mobile sources

area sources

burning fireplaces.
Those are all the four main ones
tatyana61 [14]3 years ago
3 0
Fossil-fuel combustion is the Earth’s major source of air pollution.
You might be interested in
List some biotic plants in California.
USPshnik [31]

Answer:

  • California Sagebrush
  • Point reyes meadowfoam
  • Woolly blue curls
  • Bush anemone
  • Island alumroot
  • Canyon snow iris
7 0
3 years ago
How do you show the presence of a trait in a pedigree?
zubka84 [21]
To show he presence of a trait you would need to follow it through multiple generations in a pedigree.
6 0
4 years ago
The generation of an action potential in a neuron requires the presence what type of membrane channels?
Solnce55 [7]
The generation of an action potential in a neuron requires the presence of<span> voltage-gated channels, which are </span><span> a class of transmembrane proteins that form ion channels that are activated by changes in the electrical membrane potential near the <span>channel.</span></span>
7 0
3 years ago
3
Volgvan

Answer: :Total distance to be travelled = 4.4 km

= 4400 m

Diameter of wheel = 70 cm = 0.7 m

Radius of wheel= 0.7 / 2 m

Circumference of wheel = 2 * pi *r

= 2* 22*0.7 / 7* 2

= 22*0.1

= 2.2 m

No. Of revolutions = Total distance / Circumference of wheel

= 4400 / 2.2

= 2000

Explanation:

3 0
3 years ago
Transposable elements make up 44% of the human genome. What is thought to be their function?
AfilCa [17]

Transposable elements are considered to be responsible for vast range of genome diversity and gene silencing.

Explanation:

Transposable elements are short sequences of DNA that have the ability to move from one location to another in the genome. During this process they copy themselves.

The entire process carried out by transposable elements to copy themselves and move from one location to another is called transposition.

Transposition may result in mutation and is potentially a major source of genome diversity and change. If a transposon inserts itself into the coding region of a gene,it interrupts the coding sequence and inactivates the gene expression.

In addition to this, a transposable element may contain transcription or translation termination signal that will block the gene expression downstream of insertion site.

4 0
4 years ago
Other questions:
  • The element nitrogen has the atomic number 7 and an atomic mass of 14. How many neutrons does an atom of nitrogen contain
    14·1 answer
  • Why do the symptoms of certain viral infections occur after having disappeared for a period of time
    13·1 answer
  • Which is a sentence fragment????
    10·2 answers
  • What is the benefit do using tissue culture is with cancer patients?
    5·1 answer
  • Theory v. Law
    8·1 answer
  • Suppose there a crime scene where an adult male, adult female, and a younger child are all found deceased. Investigators at the
    8·1 answer
  • When a cell undergoes mitosis, what is the result??
    8·2 answers
  • Michelle is toilet training her young daughter. The child will probably be most successful with toilet training if Michelle rewa
    7·2 answers
  • What are eosinophils?​
    7·1 answer
  • Mutation comes from the Latin word mutare,
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!