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
dsp73
3 years ago
10

2. When a piece of charcoal burns, it

Biology
2 answers:
Ivan3 years ago
6 0
D. It releases energy
sweet [91]3 years ago
6 0

Answer: Option D.

It releases energy.

Explanation:

Charcoal is a type of wood that burned or iginite under oxygen thereby producing carbondioxide, carbondioxide, water, methane, hydrogen e.t.c. when charcoal is burnt it releases energy. The energy is released because the total energy in water bonding is less than in the reactants.

2H2+O2 - 2H2O

You might be interested in
Complete the flowchart to identify the process by which blue-light photoreceptors and auxin control phototropism in plants.
DaniilM [7]
In plant seeds, the photoreceptor phytochrome is responsible for the process termed photomorphogenesis<span>. This occurs when a seed initially situated in an environment of complete darkness is exposed to light. A brief exposure to electromagnetic radiation, particularly that whose wavelength is within the red and far-red lights, results in the activation of the photorecepter phytochrome within the seed. This in turn sends a signal through the signal transduction pathway into the nucleus, and triggers hundreds of genes responsible for growth and development</span>
6 0
3 years ago
What human organ can regenerate up to half of itself if damaged?
Wittaler [7]
The liver can regenerate up to half of itself
5 0
2 years ago
What happens to all the weight of the food we eat
Margarita [4]

Answer:

All the weight of food we eat can happen in many ways. It can be digested and turned into waste. It can also be turned into body fat. The weight of the food we eat can help give us nutrition and vitamin s.

Explanation:

The weight of food can slightly go away due to food going in to the digestion system and turns into waste.

Apologies if this isn't the best answer.

5 0
3 years ago
A dichotomous key starts with _____ information and leads to _____ information
timama [110]
The dichotomous key is used as a classifying tool for items in the natural world, (trees, wildflowers, mammals, reptiles, rocks...). At each step of the classification process,<span> the user is given two choices and each choice leads to another question until the item is identified.</span>
<span>A dichotomous key starts with specific information and leads to general information.
</span>
7 0
3 years ago
Read 2 more answers
Cultures of a bacterial species were incubated on the shelf of a refrigerator, out on a lab bench top, on the shelf of a 37°C in
Oksana_A [137]

Answer:

D. Psychrophile

Explanation:

Psychrophiles or cryophiles are a type of extremophiles i.e. they live in extreme environment. They grow well in low temperatures ranging from -20 to +10 degree Celsius.

Here, the bacteria was incubated at different temperatures. It did not show growth at standard incubation temperature of 37°C which indicates that it might be an extremophile preferring either very hot or very cold environment. But it also did not show growth at 50°C which means that it does not survive well at high temperature.

Lab bench top has generally colder surface compared to the surrounding environment and a little growth was observed there which indicates that this bacteria might require cold temperature for growth. The result was finally confirmed with abundant growth observed inside refrigerator which is only possible if it is a psychrophile.

7 0
3 years ago
Other questions:
  • All hypotheses are valuable, even if they turn out not to be true. Which answer does NOT support this statement?
    7·1 answer
  • Legumes, a type of plant, require Rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photos
    5·2 answers
  • In California, a species of salamanders were geographically separated over time. The group that lived in southern California rel
    11·1 answer
  • You find a soldier lying face down. the soldier is conscious and tells you that he thinks he has injured his back. what should y
    14·2 answers
  • What distinguishes disruptive and directional selection pressures when both select for extreme genetic traits?
    11·2 answers
  • Why does the chair in which you are currently sitting retain its same shape over time?
    12·1 answer
  • Which organelle belongs in the center of the diagram that is comparing the plant cell and animal cell?
    7·1 answer
  • What did the GBR water do to the concentration of sugar
    12·1 answer
  • Which of the following statements about the tundra is not true?
    12·2 answers
  • Environmental factors can influence natural selection because they can increase or decrease and what can they increase or decrea
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!