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
makkiz [27]
3 years ago
7

Change A Animal waste is acted upon by anaerobic bacteria to produce biogas change B biogas burnt as fuel which of these changes

is a chemical change
Biology
1 answer:
Inessa [10]3 years ago
7 0

Answer:

Both Change A and B

Explanation:

Given that chemical changes is a form of change of matters that deal with the combination of various substances to form a new substance entirely that has different chemical and physical characteristics from its parents' substances.

Hence, when Animal waste is acted upon by anaerobic bacteria to produce biogas it is considered a chemical change.

Similarly, when biogas burnt as fuel it is also considered as a chemical change.

Therefore, in this case, the correct answer is "Both Change A and B" are chemical changes.

You might be interested in
Which of the following best describes how a blood cell and skin cell have the exact same DNA sequence and yet look different and
den301095 [7]

Answer:

This question is incomplete as it lacks options, however, it will be answered BROADLY so the it can be understood enough to select the correct answer.

Please find the explanation below

Explanation:

Cells perform different functions and look differently because of the process of CELL DIFFERENTIATION. All cells arise from a single stem cell, which then gradually differentiates into different types of cells with different functions, as they divide.

At the molecular level, these different types of cells contain the same DNA sequence as rightly stated in the question. However, they look and perform differently because some of the genes are turned on while the others are turned off via the process of GENE EXPRESSION.

Therefore, a blood cell and skin cell possess exactly the same DNA sequence but look different and perform different functions because of CELL DIFFERENTIATION in which some genes on the DNA sequence are expressed and others are repressed. For example, in the blood cell; the genes coding for certain proteins found in blood are expressed while every other gene is silenced or inhibited. This allows those cells to perform only blood-related functions.

3 0
3 years ago
I wanna know all the answers for this questions , thank you also (eighth grade) so make it simple ​
den301095 [7]

Answer:

hello will. you be my frnd

4 0
2 years ago
Drag each label to the correct location.
Marizza181 [45]

Answer:

* Glucose may cause an increase in bacterial growth - HYPOTHESIS

* The bacterial colonies grown without glucose don’t have capsules around their cells - OBSERVATION

* Bacterial growth in the glucose environment increased rapidly and then stopped after some time - OBSERVATION

* Increased glucose may lead to capsule formation in bacteria - HYPOTHESIS

Explanation:

In an experiment, a HYPOTHESIS is a predictive and testable statement that aims to answer a scientific question while an observation is made based on the results obtained.

According to this question, Annie wants to study the effect of glucose on bacterial colonies. She conducted the experiment by growing two colonies of bacteria - one with glucose present in the environment and one in an environment without glucose. Based on this experiment, the following statements are categorized as:

- Glucose may cause an increase in bacterial growth is a HYPOTHESIS

- The bacterial colonies grown without glucose don’t have capsules around their cells is an OBSERVATION

- Bacterial growth in the glucose environment increased rapidly and then stopped after some time is an OBSERVATION

- Increased glucose may lead to capsule formation in bacteria is a HYPOTHESIS

6 0
2 years ago
Help me!!!!!!!!!!afsjfjdbsbhxx
Bess [88]

Answer:

equivalent resistance = R1R2/R1+R2

= 30/13 ohm

V = IR

= 5×30/13

V = 150/13 ohm

8 0
3 years ago
What is the importance of kelp
diamong [38]
Sea otters are a keystone species. They play an important role in the health and stability of near shore marine ecosystems. They eat sea urchins and other invertebrates that eat vast quantities of giant kelp. ... Providing habitat is one of many services kelp offers to the marine ecosystem.
7 0
3 years ago
Other questions:
  • How are retroviruses different in their reproduction
    11·1 answer
  • You are on a field trip and are recording the salinity levels of the water. What are you measuring?
    7·2 answers
  • What abiotic factors have people changed
    13·1 answer
  • Stars start as… a. Cosmic rays b. Chunks of rock c. Disks of dust and gas d. Ice
    10·2 answers
  • I need help because i dont really know how to do this
    11·2 answers
  • Identify which of the following is the most complex and explain your answer choice:
    8·1 answer
  • Describe the path of flow of energy in an aquatic ecosystem.
    12·1 answer
  • Managing crop competitors and pests has been challenging to agronomists for centuries. One approach, integrated pest management,
    11·1 answer
  • Science question. will give brainliest! part 4!
    8·2 answers
  • What happens during cytokinesis?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!