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
NeX [460]
3 years ago
9

Which of the following lenses has at least one plane surface?

Biology
2 answers:
gayaneshka [121]3 years ago
8 0
C_____________________________________________________

Alja [10]3 years ago
5 0

D i took the pf exam

You might be interested in
How is sunlight the primary source of energy for your own life?
Pepsi [2]
Sunlight is the energy for life as it as use it to get vitamin.It also grows our food through photosynthesis. And in without we can’t see.
8 0
3 years ago
Distinguish between a dependent variable and an independent variable
Hatshy [7]

Independent Variables can be manipulated, and a Dependent Variable are observed and measured. Another way to say it is that the Independent variables change to get different results while the Dependent variables never change because you are trying to see what causes it to change

5 0
3 years ago
For a species with a haploid number of 15 chromosomes, how many different combinations of maternal and paternal chromosomes are
babymother [125]
The answer is:  " 32,768 " .
___________________________________________
Explanation:
__________________________________________________________
 →  2ⁿ  = ? ;  {that is: "2" , raised to the "n th" power, equals {<u>what value</u>} ?
___________________________________________
 → Note that "n" is the haploid number, which is: 
                           "15" (value given within this very question).
__________________________________________________
→ So we plug in "15" for "n" ; to obtain the "final value" —
                                                          which is the answer.
__________________________________________________
           →  As such:  " 2¹⁵ = 32,768 " .  (using scientific calculator online).
___________________________________________________
           →  The answer is:  " 32,768 " . 
___________________________________________________
3 0
4 years ago
The plasma membrane is composed of a phospholipid bilayer with embedded proteins. What is one of the functions of the embedded p
Anastaziya [24]

Answer: B. They allow for specific substance to travel throughout the cell.

Explanation: I know this because carrier proteins and channel proteins are some types of embedded proteins.

4 0
3 years ago
Why do scientists need to study seismic waves to analyze the interior of the earth and the layers of the earth?
DaniilM [7]

Answer:

Answer 1:

Seismic waves, the waves of energy that travel through the Earth as a result of an earthquake can tell us a lot about the internal structure of the Earth because these waves travel at different speeds in different materials. There are two types of waves that travel through the Earth: p-waves and s-waves.

P- waves are faster and they can travel through both solids and liquids. S-waves are slower and cannot travel through liquids. For both kinds of waves, the speed at which the wave travels also depends on the properties of the material through which it is traveling.

Scientists are able to learn about Earth’s internal structure by measuring the arrival of seismic waves at stations around the world. For example, we know that Earth’s outer core is liquid because s-waves are not able to pass through it; when an earthquake occurs there is a “shadow zone” on the opposite side of the earth where no s-waves arrive. Similarly, we know that the earth has a solid inner core because some p-waves are reflected off the boundary between the inner core and the outer core. By measuring the time it takes for seismic waves to travel along many different paths through the earth, we can figure out the velocity structure of the earth. Abrupt changes in velocity with depth correspond to boundaries between different layers of the Earth composed of different materials.

Explanation:

7 0
4 years ago
Other questions:
  • What is the step of the scientific method that involves test of hypothesis
    13·2 answers
  • The formal system for classifying and naming organisms was developed by The formal system for classifying and naming organisms w
    12·1 answer
  • Drag each compound to the following appropriate bin. If the compound is not involved in glycolysis, drag it to the "not input or
    5·1 answer
  • An atom of element A has 15 protons. What would the element's atomic number be?
    5·1 answer
  • When energy changes from one form to another, some energy is always changed to A.added as heat B.returned to its source C.given
    13·1 answer
  • Which of the following is not an example of a SMART long-term education or<br> training goal?
    12·2 answers
  • A bacterium produces a toxic metabolic by-product that it needs to efflux to the environment against the toxin's concentration g
    7·1 answer
  • Taking antibiotics for viral infections has no positive impact on individual health because viruses are not killed by antibiotic
    14·1 answer
  • This is one strand of the DNA sequence: ATGAC. What will be the new<br> strand after replication? *
    10·1 answer
  • Is a fly with no wings called a walk?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!