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
pshichka [43]
3 years ago
12

The primary source of air pollution is:

Biology
2 answers:
Helga [31]3 years ago
7 0
Factories is the answer
Elina [12.6K]3 years ago
7 0
It would be Automobiles because automobiles produce gas which is a source of air pollution.
You might be interested in
The average person blinks 25 times per minute how many times do they blink per year
Serggg [28]

If the average person blinks 25 times per minute you have to multiply and times it by 60(which is an hour) to equal {1,500} . Next times the number 1,500 by 24 because that is how many hours are in a day so that would equal {36,000} times a day. Now times 36,000 by 7 because that is how many days of the week so {252,000} is the answer per week.


Now to figure out how many times we blink in a year we will multiply

252,000 by 52 because there are 52 weeks in a year.


You get the answer 13,104,000


So you blink 13,104,000 times in a year.


Hope this helps

4 0
4 years ago
When the body is cold, an interaction of systems allows the body to warm itself. Which of these help the body warm
ivanzaharov [21]

Answer:

- Hair on body standing up

- Goosebumps Forming

- Shivering

Explanation:

6 0
3 years ago
Read 2 more answers
Based on depth and distance from the shoreline, how many zones are found in ponds and lakes?
spayn [35]

Answer: Five

Each pond or lake have typically five zones in common.

1. The littoral zone: It is the shore area of the pond or lake. It is a transition zone between the dry shore area and the open water.

2.The limenetic zone: It is the open water area of the lake or pond. This is the portion of water that receives sunlight light.

3.The euphotic zone: It is the zone where, algae and other plants grows. Also, this zone favors the growth of aquatic animals such as fishes, because oxygen levels are higher as this zone traps the atmospheric oxygen.

4. The profundal zone: It is the zone located below the limentic zone. This zone is not penetrated by sunlight. The size of the zone depends upon the age and water clarity of the pond or lake. It exhibit low fish and plant population because of the lack oxygen present in this zone.  

5. The benthic zone: It is the zone which is found at the bottom of the lake or pond. It consists of organic sediments and soil. This zone involves decomposition activity of the dead organic matter obtained from dead algae, plants, fish and animal wastes.


6 0
4 years ago
Read 2 more answers
Each member of a family of 5 has eye color that is a different shade of brown. The father's eyes are a very dark brown, while th
Debora [2.8K]

Answer:

Polygenetic trait

Explanation:

Traits that display a continuous distribution, such as height or skin color, are polygenic.

4 0
3 years ago
Which scientists are credited for the events described in the development of the cell theory?
Drupady [299]

Answer:

The answer to your question is...

Explanation:

Robert Hooke and Anton van Leeuwenhoek.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Discuss how a specific genetically modified organism might provide a benefit for humans and at the same time pose a threat to a
    13·1 answer
  • The nurse at a family health clinic is reinforcing educating a group of parents about normal infant development. what patterns o
    8·1 answer
  • Which of the following is NOT true of neutrophils?
    7·1 answer
  • The adjustable opening in the center of the eye through which light enters is called the: question 19 options:
    13·1 answer
  • Prior to the industrial revolution in England the peppered moth had light
    13·1 answer
  • Four substances are important for both photosynthesis and cellular respiration: oxygen, glucose, carbon dioxide, and water. What
    14·2 answers
  • I need a paragraph about non renewable energy if possible that would be greatly appreciated
    14·1 answer
  • A ______occurs when the Earth casts a shadow that partially or fully covers the Moon
    14·2 answers
  • Why are viruses at the border line of being living or non living?​
    12·1 answer
  • Examine the Lucy (Australopithecus afarensis) skeleton. Describe at least two postcranial (below the head) traits that indicate
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!