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
Advocard [28]
3 years ago
6

Can someone help me and explain please

Biology
1 answer:
Aleks [24]3 years ago
5 0
The more air is in the jar, the longer the candle will be able to burn. So the candle in jar 3 probably burned for 4 minutes.
The candle in jar 4 would be able to burn much longer then the others, because it has no lid so air can come through and keep the candle burning.
You might be interested in
The primarily physical, biological drive to find and eat food, that is mostly regulated by internal cues to eating is called:.
steposvetlana [31]

Hunger is the physical, biological drive to find and eat food, that is mostly

regulated by internal cues to eating.

<h3>Effects of Hunger</h3>

The effects of hunger include the following

  • Malnutrition
  • Stunted growth
  • Low weight etc

Hunger needs to satisfied by getting food to eat as this helps in the growth

and development of organisms. In severe cases, death may occur which is

why food is very important for our survival.

Read more about Hunger here brainly.com/question/25745253

6 0
2 years ago
Complex, invertebrate, life forms are common as fossils beginning with marine strata of Cambrian age. How long ago did the Cambr
eimsori [14]

Answer:

The beginning of Cambrian period was about 541 million years ago and ends about 484.5 million years ago.

Explanation:

Cambrian period is a geographical period that appears in Paleozoic Era and lasts at Phanerozoic Eon to the beginning of Ordovician Period and the name was given as most of the sedimentary deposits were found at that period The majority of living organism includes unicellular or some multi cellular complex life forms.

Most live forms were aquatic and arthropods were the most dominant animals in the water that are known by studying the fossil records.The species adapt themselves to change with the environmental variations.

Animals like <em>Protichnites</em> and <em>Climactichnites</em> were found during this period.

The fossil records also suggested the presence of euthycarcinoides that are the extinct arthropod species.

4 0
3 years ago
Plz answer this question: Read the passage and examine the photos. Then, suggest two reasons that scientists think developing po
ohaa [14]

Answer:

Vascular plants are successful due to better transportation for water, nutrients and reproduction.

The xylem and phloem of the vascular bundles allow for distribution of water and food to all parts of the body.

4 0
3 years ago
A student set up an experiment to show that carbon dioxide is consumed by Elodea plants during photosynthesis. She filled two te
bixtya [17]

Answer: The NEGATIVE CONTROl is the test tube that is filled with ONLY distilled water.

Explanation:

A negative control of an experiment is carried out alongside the main primary experiment except that the treatment is changed to something that is predicted to have no result. In the negative control, the student does not expect any response. This would help the student compare the result of a new experiment against an already known existing results.

Analysing the experiment carried out by the student, She filled two test tubes with distilled water and placed a piece of Elodea in one of the tubes, leaving the other without a plant. The other test tube that contains only distilled water is the negative control because she wasn't expecting any result from it. It's also served as a control sample to the primary experiment. This is observed as she blew in each tube to add carbon dioxide, which caused the distilled water to become more acidic. This would help the student know that the that experimental results are valid and to ensure that time is saved.

8 0
3 years ago
As the acidity of a solution increases, the pH will
Anettt [7]

Answer:

decreases

Explanation:

when the acidity in a solution increases the ph will decrease. when the acidity in a solution decreases the ph increases

4 0
4 years ago
Other questions:
  • What is required for reactants to form bonds? energy output energy input equilibrium exchange reaction
    7·1 answer
  • -prokaryotic cells, contains unique rRNA ,live in extreme environments ,cell walls contain no peptidoglycan membranes ,composed
    15·1 answer
  • When water changes from a liquid on Earth's surface to a gas in the atmosphere, this is known as transpiration condensation evap
    13·2 answers
  • A nursing student is providing a complete bed bath to a 60-year-old diabetic client. The student is conducting an assessment dur
    10·1 answer
  • How are structure and function related on the cellular level
    13·1 answer
  • The law of conservation of energy says (5 points)
    9·1 answer
  • NOT BIOLOGY ITS PHYSICAL SCIENCE which particles are produced by different types of bonding?
    11·1 answer
  • Which is the geometric mean between 81 and 4
    9·2 answers
  • What will happen if natural predators are removed from a habitat?
    13·1 answer
  • Which factor does not determine the strength of a toxin on a human population? (2 points)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!