The best answer is (1)
Fossil fuels are commercially available as an energy source.
They are very easy to find. More and more extractions of fossil fuels is going on everyday. With advancement in science and technology, the refineries and extraction procedures have improved a lot. This makes their availability even better.
Fossil fuels are also easily combustible. Most combustion engines need to be powered with little amount of fuel to produce large amount of energy. Very large amounts of electricity can be generated from fossil fuels.
<h2>✿━━━━@♥ℳg━━━━✿</h2><h2 /><h2>
</h2><h2>______________________________</h2><h2 /><h2>✿━━━━@♥ℳg━━━━✿</h2><h2 /><h2>Nuclear membrane</h2>
The nucleus is enclosed by a double layered cellular membrane called the nuclear membrane.
<h2>Nucleoplasm</h2>
The nucleus contains a nuclear sap, enclosed by the nuclear envelope, which is known as the nucleoplasm. This holds the nucleoli and suspends the chromatins.
<h2>Nucleolus</h2>
The nucleolus is a sub-organelle present inside the nucleus. It can be observed as a dark spot under the microscope.
Nucleoli are made up of proteins, ribosomal RNA (rRNA), and ribosomal DNA (rDNA).
<h2>Chromatin network</h2>
DNA gets associated with protein molecules to form chromatins.
Chromatins are present in the nucleoplasm.
Pressure decreases as magma rises.
Pressure increases until the volcano explodes.
Explanation:
The reason behind volcanic eruption is extreme weather, tectonic plates, climate change and magma movement. Under beneath of earths crust there are molten rock which is formed because of high temperature at core and they are melted and form a magma.
In magma there are various types of gas present. These gases are carbon dioxide, water vapor and also sulfur dioxide. These gases are stored in chambers of magma and it sealed beneath with lid of rock
Answer:
Answer is D.Produce non-identical genetically different gametes and reduction of chromosomes,creating a haploid gamete.
Explanation:
Meiosis is essential for sexual reproduction.In humans diploid gamete-mother cells or germ line undergo meiosis to produce haploid gametes.
The chromosomes pairs of each parent undergo crossing over during meiosis.so daughter cells i.e gametes have genetic variations.When gametes fuse and form zygote ,its genetic make up is different from both parents.thus meiosis allows a species to bring variations in next generations.Benenficial variations help organisms to adapt to the changes in environment.
