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
Aleks [24]
3 years ago
14

Which of the following elements makes up the smallest percentage of the atmosphere?

Biology
2 answers:
Tanzania [10]3 years ago
5 0

Answer:

c: Carbon Dioxide

Explanation:

Earth's atmosphere is mainly made up of:

78% nitrogen

21% oxygen

0.03% carbon dioxide

And smaller percentages of other elements. Therefore, out of the options, the answer is carbon dioxide

Brrunno [24]3 years ago
3 0

Answer: A

Explanation:

Oxygen makes up another 20 to 21 percent of our atmosphere. It's essential for life on Earth, and interestingly enough, it is poisonous when highly concentrated. Our concentration of 20 to 21 percent seems just right.

You might be interested in
Which of following is a use for fossils found in sedimentary rocks?
Greeley [361]

Answer:

i am pretty sure it would be B. All the above... not positive though

Explanation:

tell if wrong.... have a nice day!

7 0
3 years ago
Why is the axon of a ganglionic neuron called a postganglionic fiber?
ivolga24 [154]

Away from the ganglion The axon of a ganglionic neuron is called a postganglionic fiber because it carries impulses. an accumulation of extracellular fibrillar proteins and abnormal dendrites and axons.  A “ganglion” is essentially a living relay. The inputs are “pre-ganglionic” and the outputs are “post-gangionic.” Simple.

7 0
3 years ago
How does the mass of an object affect its a its acceleration during free fall
kirill115 [55]
Normally it is seen that objects with more mass accelerates during their free fall than objects having smaller mass. The frictional force of air also known as the drag force get negated by the massive object and so the object gets acceleration during the free fall. If the mass of the object is small, then the frictional force or the drag will slow the object during free fall. In case of vaccum the mass of the object does not matter as there is no drag or frictional force working against it. The objects with greater  or smaller mass will then free fall with the same speed in the vaccum.
5 0
3 years ago
Which of the following is true of the bones of the forearm?
Elza [17]

Answer: b. The radius forms the point of the elbow

c. The radius articulates to the wrist closest to the thumb

Explanation:

Ulna and radius are the two bones of the forearm. These bones articulates with the humerus and carpels of the hand.

b. The radius forms the point of the elbow: The elbow joint is the hinge joint that forms between the proximal ends of the radius and ulna in the forearm and distal ends of the humerus. The radius forms a pointed end.

c. The radius articulates to the wrist closest to the thumb: The wrist forms a complex joint. It forms a transition between the hand and the forearm. The radial deviation in the wrist forms the basis for the movement of the tilting of the wrist joint towards the thumb.

8 0
3 years ago
These two cells have several features in common. They also differ in several ways. The two cells share all but one feature liste
BlackZzzverrR [31]
What are the features listed below?
4 0
3 years ago
Read 2 more answers
Other questions:
  • An infant is suffering from neonatal abstinence syndrome. the nurse provides appropriate care and support for the infant during
    5·1 answer
  • To what class of minerals do gold silver and copper belong
    8·2 answers
  • Which process MUST occur before mitosis and meiosis can occur?
    14·1 answer
  • Which best describes the role of auxin?
    7·2 answers
  • An advantage of electron microscopes compared to light microscopes is that electron microscopes
    5·1 answer
  • suppose you observed the size of the deer population in an area. you discovered that over a 3 year period, the population change
    10·1 answer
  • 5. How do bacteria contribute to an ecosystem?
    15·2 answers
  • How quickly are the test results of a Simple Sugar test visible?
    11·2 answers
  • Which organism(s) between w,x,y and z represent a secondary consumer ?
    13·1 answer
  • Is this right if not please tell me the right answer!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!