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
wel
3 years ago
14

A student is building a model of a parallel circuit consisting of a battery, a switch, five light bulbs, and wires. When she con

nects all of the
components of her model, none of the bulbs light up. Which of the following could be the problem with her model?
1 One of the bulbs is burnt
out
2One or more of the wires is not connected to the battery
3The switch isn't properly closed
4The resistance of the light bulbs prevents current from flowing through the circuit
O A 1, 2, and 4
OB 1, 2, and 3
OC. 1, 3, and 4
OD. 2, 3, and 4
Biology
1 answer:
lord [1]3 years ago
6 0

Answer: D

Explanation:

It is a parrallel circuit so it would not matter if one of the bulbs were not to work.

You might be interested in
Why is it important to know a person blood type before a blood transfusion?
lord [1]
Different types of blood contact different kinds of antigens and antibodies. For example, Type A blood has A antigens and B antibodies, antibodies being the thing that fights B antigens. Type B blood has B antigens and A antibodies. So if someone with type B gets transfused with Type A blood, the person's antibodies will attack the new blood.
4 0
3 years ago
In fruit flies long wings (W) are dominant to short wings (w).
lina2011 [118]
The genotype, I believe would be the dominant long wings (W). Hope this helps!

3 0
3 years ago
Read 2 more answers
Carnivores on earth belong to which trophic level?
deff fn [24]
The third level, secondary consumers. 
6 0
3 years ago
Darwin and wallace's theory of evolution by natural selection was revolutionary because it _____.
Lisa [10]
<span>Notice a couple of things different between (A) and (B). It was NOT the first time a biologist proposed that species changed through time (so it's not B). But it finally *solidified* that idea by giving "change through time" (evolution) a MECHANISM. It gave a plausible explanation for WHY species change over time, in a testable way that made sense and had evidence to support it.

So it finally dismissed the idea that species are constant.

It also emphasized that the simple presence of *variation* within a population was a key reason for evolution.

While we're at it ... (C) is wrong because it's not *individuals* that acclimate (adapt) to their environment, but the population (the species) as a whole.

And (D) is wrong because it had nothing to do with economics or the monarchy.</span>
5 0
3 years ago
Betsye is a baby with a a healthy diet, which yields new neural connections that alter gene expression. this interaction process
Dimas [21]

This interaction process is an example of epigenesis.  

Epigenesis is processes in which living organisms such as plants, animals and fungi grow from a seed, egg or spore through a series of steps in which cells differentiate and organs form. The theory of epigenesis which was created by C.  F.  Wolff claimed that structures emerge during development  that  are not  initially formed.


3 0
3 years ago
Read 2 more answers
Other questions:
  • Jenna found a mushroom growing at school. Which question can a dichotomous key help her answer?
    15·2 answers
  • Naturally occurring compounds in the earth are called what?
    8·1 answer
  • Salt glands allow desert animals to reduce their water loss due to _______.
    10·2 answers
  • Is how gases and nutrients pass from the body tissues into the bloodstream
    5·1 answer
  • How do organisms release energy in food to make it useful?
    12·2 answers
  • In active transport, molecules are moved across
    9·1 answer
  • Which of the following is a risk of commercial fishing?
    13·2 answers
  • Which of the following is an advantage of using an incinerator to dispose of waste?
    12·2 answers
  • A plant cell can be distinguished from an animal cell because of the presence of?​
    12·2 answers
  • Describe three functions of the American Kennel Club.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!