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
kaheart [24]
3 years ago
12

Malik formed a hypothesis that an increase in atmospheric oxygen levels by 10% would cause red-legged grasshoppers to grow large

r than normal. Suppose that Malik performs an experiment to test his hypothesis. Which of these actions would represent a scientific mistake in his experiment?
He experiments on live grasshoppers instead of preserved ones.
He focuses on red-legged grasshoppers instead of all kinds of grasshoppers.
He varies the nitrogen and carbon dioxide levels in the air from one trial to the next.
He conducts the experiment in a controlled lab setting with a lab partner.
He measures the mass and length of his specimens at the start of each trial.
Physics
2 answers:
worty [1.4K]3 years ago
8 0
<h2>Answer:</h2>

The option C is the correct answer.

Which is, "He varies the nitrogen and carbon dioxide levels in the air from one trial to the next".

<h3>Explanation:</h3>

The hypothesis of Malik was about the effect of increased oxygen level on the growth of the red-legged grasshoppers.

So the areas of his experiment should be the:

  • Grasshopper type.
  • High oxygen level.
  • Rate of growth of grasshopper.

So all the given options are relevant to his experiment except the third one.

So varying the nitrogen and carbon dioxide level in air could not contribute in his experiment.

<h2 />
Alenkasestr [34]3 years ago
6 0

Answer:

c

Explanation:

You might be interested in
Please Someone Help me I Need Help ASAP PLEASE
dimaraw [331]
The match making one is Radiation is i think B and Convection i think is C and Conduction i think is A.  I think 1 is radiation. Because radiation is transferred between objects or an empty space. Number 2 i think is conduction Because conduction is the transfer of thermal energy between to objects touching. Number 3 i also i think is radiation because radiation transfers between objects. Number 4 i also think is conduction because the spoon was touching a hot pot that was on the stove so then the thermal energy was transferred between the two objects touching. number 5 I think is convection because convection is the transfer of energy by the movement of a fluid, such as air or water. Number 6 i think is radiation because the snake is not touching the lamp and radiation goes all across spaces. Number 7 i think is convection because convection is the movement of a fluid, such as air or water. Hope this helps sorry its so long :)      
4 0
3 years ago
A ball is moving with a velocity of 0.5 m/s its velocity is decreasing at the rate of 0.05 m/s² what is its velocity in 5 second
Law Incorporation [45]

Answer:

v after 5s = 0.25 m/s, it took 10s to stop, it has traveled 2.5m before stopping

Explanation

We can use the equation of motion with constant acceleration

Given: v0= 0.5 m/s a= -0.05 m/s²

v(5s) = v0 + a×t = 0.25 m/s

Stop => v=0 => v0 + a×t = 0 => t=10s

Distance at t=10s ⇒ x(10) = 0.5×10 + 0.5x(-0.05)x10² = 2.5m

4 0
3 years ago
When electrons are accelerated by 2450v in an electron microscope they will have wavelengths of
Sholpan [36]
I think the answer is A I’m
Not sure tho
5 0
2 years ago
What is the weight of the ethyl alcohol that exactly fills a 200.0 mL container? The density of ethyl alcohol is 0.789 g/mL
sweet [91]

Answer:

1.55 N

Explanation:

Density = mass / volume

0.789 g/mL = m / 200.0 mL

m = 157.8 g

Weight = mass × acceleration due to gravity

W = (0.1578 kg) (9.8 m/s²)

W = 1.55 N

3 0
3 years ago
30. How do you make a conclusion?
FromTheMoon [43]
B. You compare the data
6 0
3 years ago
Other questions:
  • A gardener pushes her 90 kg wheelbarrow in a straight line out of her garage and across the yard in 18 s. If her average velocit
    15·1 answer
  • True or false the magnetic poles of the earth move?
    14·1 answer
  • Give reason 1.electromagnets are temporary magnets ?
    13·1 answer
  • i got the right answer for this question (pretty sure i guessed or just asked me teacher the answer?) but can someone explain ho
    5·2 answers
  • In the formula vy=a t what is the value of a for an object in projectile motion
    12·1 answer
  • Two objects have the same momentum. Which of the following is true? I. The masses of the objects are equal. Ii. The speeds of th
    10·1 answer
  • The relative angle at the knee changes from 0 to 85 degrees during the knee flexion phase of a squat exercise. If 10 complete sq
    15·1 answer
  • For the circuit, suppose C=10µF, R1=1000Ω, R2=3000Ω, R3=4000Ω and ls=1mA. The switch closes at t=0s.1) What is the value of Vc (
    11·1 answer
  • A 165 pound football player assumed a 4 point stance at the line. If his base of support was 30” wide, 38” deep, with the center
    11·1 answer
  • A -ion (negative ion, one with extra negative charge )
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!