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trapecia [35]
3 years ago
11

Many energy sources are renewable, but cost more to use than fossil fuels. True or False?

Biology
2 answers:
raketka [301]3 years ago
8 0
True is the correct answer. The statement "<span>Many energy sources are renewable, but cost more to use than fossil fuels." is a true statement.</span>
mrs_skeptik [129]3 years ago
7 0
True, but there are some energy sources cheap
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How do photosynthesis and cellular respiration contribute to the carbon cycle?
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Answer:

Carbon cycle may be defined as a type of biogeochemical cycle that regulates the amount of carbon in nature. The carbon is released by the living animals and utilized by the plants in form of carbon dioxide.

Photosynthesis consumes the carbon dioxide to make carbohydrates where as cellular respiration releases carbon dioxide and breakdown the carbohydrate. Both these process helps in recycling of the carbon in nature and maintains the level of carbon in nature.

7 0
3 years ago
3. How can we use what we know about cell membranes to treat disease
Amiraneli [1.4K]

We use cell membranes to treat disease because the cell membrane is one of the main barriers that pathogens need to overcome, hindering their replication.

<h3>What is the cell membrane?</h3>

The cell membrane is a thin lipoprotein film formed by phospholipids and proteins delimiting the cytoplasm of all types of cells. They prevent invading microorganisms from attaching to the cell and replicating.

Then, using the concepts of cell membrane, we can use them to prevent viral diseases from occurring since the virus cannot fix itself to replicate. So in this case, the cell membrane is one of the main barriers that pathogens need to overcome, hindering their replication.

See more about cell membrane at brainly.com/question/13524386

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4 0
2 years ago
Mendel formulated his principles of inheritance based on _____.
Snezhnost [94]
<span>observations on the outcomes of breeding experiments. </span>
3 0
3 years ago
How many grams of CaCl2 are in 0.75M solution with a volume of 1L
grandymaker [24]

83.235 grams of CaCl2 is required to make 1 litre of 0.75M solution.

Explanation:

Molarity or molar concentration is the number of moles of solute that can be dissolved in 1 L of a solution.

let us find the number of moles

n=C*V                Concentration is 0.75M

                          Volume is 1000ml.

n= 0.75*1

n= 0.75

This means there are 0.75 moles of CaCl2 in 1000 ml of solution of .75M.

Molar mass of CaCl2 is = 40.08+ 2(35.5)

                                       =   110.98 gms

Thus 1 MOLE OF CaCl2 weighs 110.98

         so 0.75 moles will weigh  110.98*0.75

                                              =  83.235 grams of CaCl2 is required to make 1 litre of 0.75M solution.

4 0
3 years ago
______ fossils are used to determine in what time period in the past events occurred.
Serga [27]
The answer is A I believe
5 0
3 years ago
Read 2 more answers
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