Answer:
Pyroclastic flows are mixtures of hot gas and ash, and they travel very quickly down the slopes of volcanoes. They are so hot and choking that if you are caught in one it will kill you. ... Some of the good ways that volcanoes affect people include producing spectacular scenery, and producing very rich soils for farming.
:))i forgot to add... Fast-moving lava can kill people and falling ash can make it hard for them to breathe. They can also die from famine, fires and earthquakes which can be related to volcanoes. People can lose their possessions as volcanoes can destroy houses, roads and fields.
A decomposition reaction<span> is a type of chemical </span>reaction<span> in which a single compound breaks down into two or more elements or new compounds. These </span>reactions<span> often involve an energy source such as heat, light, or electricity that breaks apart the bonds of compounds.</span>
Endothermic feature distinguishes birds from the rest of the reptiles. So, the correct option is (a).
A crucial adaptation that allowed reptiles to exist on land was the growth of their scaly skin, that stopped water loss from the skin. Ectotherms are animals whose primary source of body heat is the environment. Reptiles fall under this category. They control their body temperature using behavioural strategies including self-heating by basking or self-cooling by seeking cover in burrows or shade.
Birds are endothermic, in contrast to reptiles, which means they produce their own body heat through metabolic processes. The feathers on birds, which are repurposed reptilian scales, are what set them apart from other animals. The first birds' feathers allowed them to glide and eventually take to the air in a flapping motion. They also served to insulate the bird's body and aid in the preservation of body heat.
Learn more about reptiles here:
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AMINO ACIDS is the subunit of a protein molecule
Answer:
Ribose
Explanation:
DNA is a large molecule, a type of nucleic acid which store and act as a genetic material of the cell. DNA molecule is formed by the repeating monomer units called nucleotides.
Each nucleotide is made up of three subunits as:
1. 5-C sugar: De-oxyribose formed by the removal of oxygen group from 2' OH group of ribose. Ribose is the sugar molecule present in RNA nucleic acid.
2. Phosphate group (PO₄³⁻)
3. Nitrogenous bases: adenine, guanine, adenine and cytosine.
Thus, ribose is the correct answer.