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3 years ago

Select all the correct answers.

1 answer:

7 0

Answer So, the three main structural differences between RNA and DNA are as follows: RNA is single-stranded while DNA is double-stranded. RNA contains uracil while DNA contains thymine. RNA has the sugar ribose while DNA has the sugar deoxyribose.

Explanation:

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Smaug tells Bilbo he doesn't like

Sidana [21]

Answer:

dwarves

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3 years ago

Why did Barro Colorado Island (formed from a large hill during the flooding of the Panama Canal in 1914) have dozens of species

ahrayia [7]

Answer:

The correct answer is option c.

Explanation:

In the Barro Colorado Island, the mentioned local population of the butterfly species went on to become extinct mainly due to the fragmentation of habitats and the loss of habitats. The host plant on which the butterflies fed could not grow and they started to decline in number and slowly became extinct. Due to this the species of the butterfly also would have got extinct because of the lack of food.

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4 years ago

List the pathway of an oxygen gas molecule from the surrounding air through the respiratory system to the blood. Just list the n

vesna_86 [32]

The names of the respiratory structures involved include the following: nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli.

<h3>What is respiration?</h3>

Respiration is defined as the oxygenation of blood through the intake of oxygen and the removal of carbon dioxide.

The pathway of oxygen gas molecule from the surrounding air through the respiratory system to the blood include respectively the following:

Nasal cavities (or oral cavity): This has a direct association with the outside oxygen from the environment.

pharynx: This so also called the throat.

trachea: This is also called the wind pipe.

Primary bronchi (right & left): This divides from the trachea to form two bronchi.

Secondary bronchi:

Tertiary bronchi:

bronchioles:

alveoli.

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1 year ago

Categorize the given minerals into metallic and non-metallic minerals?

tangare [24]

Iron, Gold, Aluminum, Sapphires and Copper are the metallic minerals while Quartz, Calcite, Diamond, Rubies, Emerald, Topaz, Coal and Petroleum are the non-metallic minerals.

<h3>What are minerals?</h3>

Mineral is a chemical compound which is normally crystalline in nature. It is a solid substance present in nature made up of one or more and elements which are combined together.

It is formed as a result of geological processes . For example it includes quartz, calcite, sulphur, clay minerals etc. Minerals are used in the production of ceramics oftenly.

Properties of minerals :

1. They have characteristic chemical composition

2. They have highly ordered atomic structures

3. They have several physical properties such as hardness, luster and cleavage.

Thus, Iron, Gold, Aluminum, Sapphires and Copper are the metallic minerals while Quartz, Calcite, Diamond, Rubies, Emerald, Topaz, Coal and Petroleum are the non-metallic minerals.

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1 year ago

The largest nerve of the highlighted structure is the ________ nerve.

trasher [3.6K]

The largest nerve is the <span>sciatic nerve</span>

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3 years ago