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stealth61 [152]
3 years ago
7

How can we generate energy without fossil fuels?

Biology
1 answer:
Natali5045456 [20]3 years ago
4 0

Answer:

Biomass is a plant that operates a similar gas and coal-fired plants. Instead of burning fuel this plant is fueled by (different biomass like growing trees,wood chips,biogad,etc)

Ex: In 2017 ,biomass generated 2.3% of the world's electricity

Hope this helps !

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All chordates have _____ (at some point in their life cycle). feathers diaphragm fins pharyngeal pouches
IceJOKER [234]
<span>The correct answer is pharyngeal pouches.</span>

   <span>All chordates for at least some period of their life have pharyngeal pouches (pharyngeal slits). Those are the openings in the pharynx with the function in the filter-feeding. Pharyngeal slits are present during the embryonic stages of tetrapod development. They <span>develop into gill arches  (bony fish) and into the jaw and inner ear (terrestrial animals).</span></span>
5 0
2 years ago
The bacteria have an initial concentration of 1000 cells/cm3 . Each cell divides once every 30 minutes. Calculate how long it wi
Levart [38]

It will take <u>120 minutes</u> for the concentration to become > 15000 cells/cm³

<u>Given data:</u>

Initial concentration ( density ) = 1000 cells / cm³

Target/final concentration = > 15,000 cells /cm³

<h3 /><h3>Calculating the concentration every 30 minutes </h3><h3 />

<em>note</em><em> : Given that each cell divides every 30 minutes </em>

  • <u>After the first 30 minutes </u>

Concentration = 2000 cells / cm³

  • <u>After 60 minutes </u>

concentration = 4000 cells / cm³

  • <u>After 90 minutes </u>

concentration = 8000 cells / cm³

  • <u>After 120 minutes </u>

concentration = 16000 cells / cm³

Therefore after 120 minutes the concentration of the cells will be greater than 15000 cells/cm³ ( i.e. 16000 cells/cm³ )

Learn more about concentration : brainly.com/question/17206790

4 0
2 years ago
Chlorophyll creates___<br> and recycle oxygen.
nadya68 [22]

Answer:

sugary carbohydrates

Explanation:

Chlorophyll captures the sun's rays and <em>creates</em> <em>sugary carbohydrates or energy </em>during photosynthesis which allows the plant to grow.

5 0
2 years ago
What is the main difference between protein domains and protein subunits? Group of answer choices1. Protein domains do not have
shusha [124]

Answer: 2. Each subunit represents a separate polypeptide chain, while one polypeptide chain may contain several domains.

Explanation: Each subunit constitutes of one polypeptide chain. A polypeptide chain has one particular gene coding for it. thus it simply implies that a protein must have one gene for each subunit.

Many proteins is made up of different protein domains. A particular domain may appear in a variety of different proteins.

domains are stable on there own, they can be exchanged via genetic engineering between one protein and another.

3 0
3 years ago
Write one example of the way carrying capacity affects community.
satela [25.4K]
Carrying compacity affects communities because there is usually limited resources. If a population gets too high, they may die out.
6 0
2 years ago
Read 2 more answers
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