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Archy [21]
4 years ago
10

When you rode a bicycle, when is friction helpful and when is it not helpful? Explain

Biology
1 answer:
Gala2k [10]4 years ago
8 0
Friction is helpful when trying to slow the bike but is not helpful when trying to gain speed

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Answer Explore It! #1 through #4 <br> Pls help me with this because I’m confused.
marta [7]

Answer:

<u>Explore It #1</u>

1) There are <u>12 consumers</u> in this food web.

2) This food web had <u>2 producers</u>.

<u>Explore It #2</u>

1) The Greenfly eats the berries. The berries are eaten by a grasshopper.

2) The snake eats the frog. The frog eats the grasshopper.

<u>Explore It #3</u>

1) The Frog eats a dragonfly.

   The Snake eats the frog.

   The Ladybug eats the greenfly.

<u>Explore It #4</u>

1) A snake eats a lizard. The Owl eats a lizard.

2) A shark eats a tuna. The Blue whale eats a group of krill.

<u>Give Brainliest if you please</u>

4 0
3 years ago
Read 2 more answers
Why is newton's first law of motion considered a law and not a theory?
Vsevolod [243]

Answer:

Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

3 0
3 years ago
Forty mothers have taken the suspected drug during their pregnancies. of these mothers, 35 have delivered malformed infants. in
olasank [31]

The complete question is :

As an epidemiologist you are going to investigate the effect of a drug suspected of causing malformations in newborn infants when the drug in question is taken by pregnant women during the course of their pregnancies. As your sample you will use the next 200 single births occurring in a given hospital. For each birth a medication history will be taken from the new mother and from her doctor; in addition, you will review medical records to verify use of the drug. [N.B.: These mothers are considered to have been followed prospectively during the entire course of their pregnancies, because a complete and accurate record of drug use was maintained during pregnancy.] The resultant data are: Forty mothers have taken the suspected drug during their pregnancies. Of these mothers, 35 have delivered malformed infants. In addition, 10 other infants are born with malfunctions. What is the relative risk between exposure to the drug and malformations?

Answer:

14

Explanation:

  • The relative risk is a measure that is used to calculate or compare the likelihood or the chance that an event would occur while comparing the two groups.
  • To calculate the relative risk, the probability of an event occurring in one group is compared with the probability of the event occurring in another group and this is done by dividing the probability of one group by another.
  • The value of relative risk is always either zero or greater than zero but it cannot be negative.
  • The value 1 indicates neutrality.
  • The probability of an event = no. of favorable outcomes/ total no. of outcomes
  • For the given question, 35 mothers out of 40 delivered infants that were malformed, so the probability of delivering malformed infants is 35/40.
  • Out of the 200 births, 40 have occurred so total births left is 200 - 40 = 160
  • Therefore, the probability of the second event is 10/160.
  • Therefore relative risk is = (35/40)/(10/160) = (0.875/0.062) = 14
6 0
4 years ago
FIRST ANSWER GETS BRAINLIEST
pickupchik [31]

Answer:

method a is convection and method b is conduction

Explanation:

method a is convection and method b is conduction

3 0
3 years ago
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Identify the specific process by which the clavicle develops.
o-na [289]

Answer:

The clavicles and the cranial bones of the skull develop from a fibrous membrane. This process is known as intramembranous ossification.

7 0
4 years ago
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