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
leva [86]
2 years ago
15

. Why do some people require bifocals (

Biology
2 answers:
tresset_1 [31]2 years ago
5 0

Answer:

Bifocal lenses are used for people who are both nearsighted and farsighted. It is common for people who are over the age of 40 to begin to notice a change in their vision and require the need for bifocals. As we age, our eyes begin to have trouble focusing on objects at different distances away.

Explanation:

Vesna [10]2 years ago
4 0

Answer:

People have to wear bifocals most commonly because of a condition called presbyopia. This condition occurs naturally. It causes difficulties in the eye’s focusing abilities. Bifocals work to help the eyes focus more clearly, which is why people have to get them.

Explanation:

You might be interested in
According to blood flow patterns, the basal ganglia and cerebellum appear to be where which type of memory is stored
nikklg [1K]

Answer:

The options are

A. Procedural

B. Eidetic

C. Skill

D. Declarative

The answer is D. Declarative

According to blood flow patterns, the basal ganglia and cerebellum appear to be in and stored in the type of memory called Declarative

8 0
3 years ago
What is Geographic isolation? *
Harlamova29_29 [7]

Answer:

When populations are separated by a barrier forming a new species

3 0
3 years ago
Subunits of skeletal muscle fibers that are composed of sarcomeres are called ________. Subunits of skeletal muscle fibers that
Elanso [62]

Answer:

The correct answer is myofibrils

Explanation:

The fundamental part of the muscle cytoskeleton is made up of myofibrils that are the contractile elements of skeletal muscle cells.Muscle fibers are made up of myofibrils, membranes, and cytoskeletal networks that anchor contractile fibrils to the sarcolemma. Myofibrils are composed of repeating contractile units known as sarcomeres and are perhaps the most ordered macromolecular structures in eukaryotic cells. Myofibrils are made up of actin and myosin filaments that are large polymerized protein molecules responsible for actual muscle contraction.

4 0
3 years ago
Which of the following solid fuels has the highest heating value? A. Bituminous coal B. Lignite C. Wood D. Coke
andreev551 [17]
Among the following solid fuels given in the question, coke has the highest heating value. The correct option among all the options that are given in the question is the last option or option "D". The heating value of coke is calculated to be between 28000 kJ/Kg to 31000 kJ/kg. I hope the answer helps you.
6 0
2 years ago
In which situation is the principle of cross-cutting relationships useful in determining relative age?
Rzqust [24]

Answer: Igneous rock forms between sedimentary layers.

This can definitely help in determining relative age because sedimentary rocks will be the older rock than igneous rock as igneous rock has formed between sedimentary rocks

Explanation:

8 0
3 years ago
Other questions:
  • Describe 3 values that the biosphere provides
    9·1 answer
  • What do we call the naming system used in Biology to name all organisms?
    12·1 answer
  • Select all that apply. For the photosynthesis process to occur, a plant needs _____. sunlight chlorophyll nitrogen carbon dioxid
    6·1 answer
  • A gland secretes enzymes through a duct onto the surface of a body part. Which gland is it most likely to be?. . A.pituitary gla
    7·2 answers
  • Why do the rate at which enzymes catalyze their reactions decrease when cellular atp levels are high
    15·1 answer
  • A battery consists of five dry cells connected in series. If the voltage developed by each cell is 1.5 V, the total voltage deve
    8·1 answer
  • Which activity would most likely cause a rapid breakdown of glucose molecules?
    11·2 answers
  • ERRE
    10·1 answer
  • Which statement about bones is
    6·1 answer
  • given that a couple with type a blood and type o blood already have a child with type o blood, construct a punnett square for th
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!