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
Anni [7]
2 years ago
10

Mammals use their lungs to provide oxygen for themselves from the air. Fish spend a majority of their time in the water, and ins

tead, developed gills. What is the function of gills? *
a-Gills break down water into hydrogen and oxygen so the fish can use the oxygen.

b-Gills allow the fish to breathe oxygen in the water and the air.

c-Gills allow the fish to use the oxygen that is dissolved in the water.

d-Gills allow the fish to use the oxygen in the air, but use it more slowly so they can live in water.

The Barber's have a circular flowerbed in their front yard. The want to put fertilizer on ha
Chemistry
2 answers:
Elenna [48]2 years ago
7 0
B of course is the answer
Wewaii [24]2 years ago
3 0

Answer:

C

Explanation:

a fish cant breath outside water

You might be interested in
On what is the geologic time scale based?
nekit [7.7K]

Answer: Either A or D

Geologists and paleontologists constructed the geologic table based on the relative positions of different strata and fossils, and estimated the time scales based on studying rates of various kinds of weathering, erosion, sedimentation, and lithification.

5 0
3 years ago
Read 2 more answers
Does a molecule want a geometry that has high energy of low energy
Alex
High energy hope this helps
4 0
3 years ago
Read 2 more answers
Find the density.... Mass is 138g and Volume is 100 mL​
solniwko [45]

Answer:

1380 kilogram/cubic meter

p=\frac{m}{v}

=\frac{138g}{100mL}

=1.38

=1380

4 0
3 years ago
What is the oxidation state of cl in hclo4?
Irina-Kira [14]
There is 1 H atom: (1)(+1) = +1 The oxidation number of O is -2. There are 4 O atoms here: (4)(-2) = -8 So the oxidation state of Cl is +7.

NOTE: The maximum positive oxidation number for chlorine is +7,<span> the same as its group number (VII).</span>
3 0
3 years ago
Read 2 more answers
In a certain industrial process involving a heterogeneous catalyst, the volume of the catalyst (in the shape of a sphere) is 10.
olga nikolaevna [1]

Answer:

a. The second run will be faster.

d. The second run has twice the surface area.

Explanation:

The rate of a reaction is proportional to the surface area of a catalyst. Given the volume (V) of a sphere, we can find its surface area (A) using the following expression.

A=\pi ^{1/3} (6V)^{2/3}

The area of the 10.0 cm³-sphere is:

A=\pi ^{1/3} (6.10.0)^{2/3}=22.4cm^{2}

The area of each 1.25 cm³-sphere is:

A=\pi ^{1/3} (6. 1.25)^{2/3}=5.61cm^{2}

The total area of the 8 1.25cm³-spheres is 8 × 5.61 cm² = 44.9 cm²

The ratio of  8 1.25cm³-sphere to 10.0 cm³-sphere is 44.9 cm²/22.4 cm² = 2.00

Since the surface area is doubled, the second run will be faster.

6 0
3 years ago
Other questions:
  • How much thermal energy is in 100 grams of water at 50 degrees Celsius
    8·2 answers
  • Which element has the largest difference between the third ionization and the fourth ionization?
    7·1 answer
  • What is the unit used for water vapor?
    5·1 answer
  • PLEASE HELP 15 POINTS ONE QUESTION
    15·1 answer
  • Large mountain ranges rising up from the ocean floor are called
    12·2 answers
  • 12.8g of zinc reacts with hydrochloric acid. what mass of hydrochloric acid is produced
    14·1 answer
  • What is the best description of the Bohr model of the atom? The atom consists of a positively charged material with negatively c
    9·2 answers
  • What does the prefix cis- mean in chemistry
    7·2 answers
  • How can you move a object without making contact?
    14·1 answer
  • When dissolved in water all acids will???
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!