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
Anna35 [415]
1 year ago
5

A swim team thinks that the swimsuits and swim caps they use may affect the team's performance. The swim team decides to test if

the swimsuits make a difference on how fast they can swim. They split the team in two groups. The two groups wear different kinds of swimsuits and different kinds of swim caps.
Why is their test invalid?


A.The swim team didn't have enough members.
B.They should have changed one variable, keeping the other the same.
C.They all swam different speeds on purpose.
D.Actually, the test is valid.
Biology
2 answers:
d1i1m1o1n [39]1 year ago
5 0
The answer is A ……………
densk [106]1 year ago
3 0

Answer:

A

Explanation:

They need a control group

You might be interested in
10 scientific names of living organisms
Mariana [72]

Answer:

bdjskskbrjjsiejbbnxoskqb qbaksihbbnnsn

Explanation:

bbsjakajdbbe bRSSjjansbne

4 0
2 years ago
Help me pls...........
Thepotemich [5.8K]
When i say apes i mean monkeys
First question: tailbones, how other animals evolved
Second question: apes had tailbones, other animals have evolved.
Third Question: Both humans and apes had tailbones, shows that evolution does exist.
5 0
3 years ago
What is the potential energy in the thylakoid membrane used for?
liubo4ka [24]

The right answer is to perform photosynthesis (more precisely to convert ADP to ATP by ATP synthase).

Light comes to us in the form of photons. These photons have a different energy potential depending on their wavelength.

When a pigment picks up a photon corresponding to its absorption capacity, one of its electrons goes into the excited state. This energy can be transmitted in 3 ways: either by spreading it in the form of photon or heat; both ways lose energy. The third is to transmit resonance energy and there is almost no loss of energy.

A photosystem consists of a reaction center and a collector antenna to optimize the absorption of photons triggering photochemical reactions in order to operate the ATP synthase to produce ATP in the presence of a hydrogen gradient.

8 0
3 years ago
Read 2 more answers
The diagram shows a nephron
Alex_Xolod [135]
I'm not sure what you mean by this but here is a diagram of a nephron!! Hope this helps?

4 0
3 years ago
Read 2 more answers
Match the term to its description.
Amiraneli [1.4K]
I believe that the correct match will be;
Prominences- A
Sunspots - B
Solar flares - C
Convection -D
Prominence is a large, bright feature extending outward from the Sun's surface. Prominences are anchored to the Sun's surface in the photosphere, and extend outwards into the Sun's hot outer atmosphere, called the corona.
Sunspots are darker, cooler areas on the surface of the sun in a region called the protosphere. Solar flares are large eruptions of electromagnetic radiation from the sun lasting from minutes to hours. 

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which type of protein will fight disease?
    15·1 answer
  • Which joint has the greatest range of motion?
    15·1 answer
  • Which group within an ecosystem contains the most energy
    13·2 answers
  • Which of the following has the highest level of biodiversity?
    10·1 answer
  • A group of scientists has recently created a strawberry with a new mutation. This mutation causes the strawberry plant to produc
    9·1 answer
  • What are the 2 major functions of mitosis do
    6·2 answers
  • 1. Which of the following statements is not true regarding mutations?
    10·1 answer
  • She enjoys studying fossils. She learned how fossils called index fossils are found in the rock layers. The index fossils help s
    13·1 answer
  • What is a chromosome and what is its relationship to DNA?
    10·1 answer
  • What is water resource​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!