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
nignag [31]
3 years ago
8

Which statement about a physical and chemical changes is true?

Biology
2 answers:
Verizon [17]3 years ago
8 0
I think the best answer for this question would be B)
shepuryov [24]3 years ago
3 0
Answer b is wrong because a change if state is a physical change. answer c is wrong because that doesnt make any sense. answer d is wrong because if there is no change in state, that doesnt mean it isnt a physical change. the right answer im pretty sure is A
You might be interested in
Rosa drew a flow chart of the carbon cycle. Flow chart of the carbon cycle with 4 boxes connected by arrows. Box 1: carbon dioxi
leonid [27]

Answer:

(a) X: Producers undergo photosynthesis. Y: Decomposers return carbon to the soil and release waste.

Explanation:

<em>(a) X: Producers undergo photosynthesis. Y: Decomposers return carbon to the soil and release waste. </em>

<em>(b) X: Decomposers return carbon to the soil and release waste. Y: Producers undergo photosynthesis. </em>

<em>(c) X: Decomposers take in carbon dioxide. Y: Producers absorb carbon through their roots. </em>

<em>(d)X: Producers absorb carbon through their roots. Y: Decomposers take in carbon dioxide. </em>

<u>Box 2 (X)  would be the process through which producers fix carbon dioxide to produce their own food, the carbohydrate. T</u>he process is otherwise known as photosynthesis and can be represented by the following equation:

6CO_2 + 6H_20 --> C_6H_1_2O_6 + 6O_2

<u>Box 4 (Y) would be the process of decomposition.</u> Both producers and consumers eventually die and decompose in the soil. During this process, some of the carbon returns to the soil as organic matters while the process of microbial decomposition releases carbon dioxide into the atmosphere.

The correct option would be (a).

3 0
3 years ago
I do not understand I need help in doing the whole thing
9966 [12]
The time is the y axis and the bacteria is you x axis
3 0
3 years ago
Why are cells so small? In your answer, use the terms volume, distance, diffusion, surface area, plasma membrane.
Leno4ka [110]

Answer:

Cells are so little, so they can maximize their ratio of surface area to volume.

Explanation:

Smaller cells have a higher ratio which allows more molecules and ions to move across the cell membrane per unit of cytoplasmic volume. Cells are so small because they need to be able to get the nutrients in and the waste out quickly.

4 0
2 years ago
Quantum mechanics is the study of nature at a very small scale,even smaller than an atom.This kind of study faces many limitatio
harkovskaia [24]
It is best to create models
4 0
3 years ago
What organisms are found in the climax community
tresset_1 [31]
Weed and grass.......
7 0
3 years ago
Other questions:
  • Define the five systems. Be sure to include enough information to distinguish each system from the others. (Site 1)
    13·2 answers
  • What happens to the size of the cells as cleavage takes place and cell numbers increase?
    6·1 answer
  • Where does rna polymerase begin transcribing a gene into mrna? see concept 17.2 ( page 342)?
    8·1 answer
  • During the production of fertilizer, NH(am) reacts with H3PO4(aq). For this chemical reaction, match each description with the a
    12·2 answers
  • Someone help me please
    8·1 answer
  • Where is the green sample of water from
    13·1 answer
  • A molecule that can be used as a molecular clock has a neutral mutation rate of one mutation per 20 million years. How many year
    15·2 answers
  • Does anyone need help with something dealing with space science???
    9·2 answers
  • What is the main advantage of chronometric dating over relative dating?
    6·2 answers
  • Help me please !!!!!!!!!!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!