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N76 [4]
3 years ago
10

What are the maximum number of covalent bonds an element with atomic number 16 can make with hydrogen?

Biology
1 answer:
vazorg [7]3 years ago
6 0
B. 2
Two concepts being tested here – the pattern of distribution of electrons and the octet rule.<span>  </span>
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Match the name of the greenhouse gas with one of the human activities that produces it.
Svet_ta [14]

Answer:

carbon dioxide- burning of fossil fuels

fluorinated gases- industrial processes

methane- production and transport of oil and natural

gas

nitrous oxide- agricultural and industrial activities

Explanation:

Greenhouse gases are gaseous components that induces greenhouse effect. This means that due to their structural ability to trap heat energy in the atmosphere, they contribute to the global warming effect on the Earth. However, this greenhouse gases are produced in large amounts as a result of the day-to-day anthropogenic activities. The following are the greenhouse gases and how they are produced.

Carbondioxide (CO2)- Carbondioxide is the most common and important greenhouse gas. It is generated via natural processes like respiration but also produced when fossil fuels e.g coal, petroleum etc. are burned.

Fluorinated gases- This is another greenhouse gas caused by activities of man. Fluorinated gases are produced in industries during the production of certain products.

Methane- Methane is a gaseous hydrocarbon and the principal constituent of natural gas. Therefore, the production and transportation of oil and natural gases can lead to the escape of methane into the atmosphere.

Nitrous oxide- Nitrous oxide is an oxide of nitrogen. It is mainly produced via agricultural processes such as nitrification and denitrification or use of fertilizers etc. and also industrial actions.

3 0
3 years ago
Salivary amylase begins the process of carbohydrate digestion in the mouth. The activity of salivary amylase is halted in the st
salantis [7]
Answer:

The acidic environment in the stomach stops the action of the amylase enzyme.

The stomach will secrete digestive juice that contain hydrochloric acid and digestive enzyme such as pepsin to digest protein.

The HCL create an acidic environment that will deform the ionic and hydrogen bond of the amylase which cause the enzyme to be denatured.
5 0
2 years ago
HELP ASAP TIMED! PLEASE
timurjin [86]

Hi!


The answers would be 1. (D) and 2. (B)


<h3>Explanation of Answer 1</h3>

Ice cores are in essence drilled cylinders that are acquired from glaciers or ice sheets. Ice sheets and glaciers are formed over many years as a result of deposits of snow layers. As these layers form, the lower layers become denser with each new layer, owing to pressure, and in the process it traps the air, which is preserved in the form of bubbles in the layer, therein preserving the composition of the air at a particular period of time. Scientists use ice cores to compare the atmospheric composition of previous years to those of recent years, and the gas mainly studied is carbon dioxide owing to its bringing about a climatic change.


<h3>Explanation of Answer 2</h3>

The Earth's orbit is caused by the gravitational attraction that is present between the Earth and the Sun, but changes due to the shape of the orbit (eccentricity), the wobble of the Earth about its axis (precession), and the axial tilt of the Earth (obliquity). These cause a change in the Earths orbit, which give rise to Milankovitch's cycles. Milankovitch's Cycles describes a revolutionary movement of the Earth around the Sun. These cycles are observed to be determinants of the climate of the Earth, in the regard of how much heat or energy the Earth is exposed to.


Hope this helps!

8 0
3 years ago
What best defines biodiversity? The variety of traits a species has A group of organisms of one species All the different habita
dangina [55]

Answer:

All the different plants, animals, fungi, microorganisms, and variety of ecosystems found on Earth

Explanation:

Biodiversity can be broken down into "Biological" and "diversity" which means the how diverse in number and variety is the life found on Earth. Life represents all living organisms like plants, animals, microbes etc.

Based on this, all the different plants, animals, fungi, microorganisms, and variety of ecosystems found on Earth is the option that best defines biodiversity. The other options leaves out the variety (talked about only one species) and biological aspect of the term.

3 0
3 years ago
Read 2 more answers
Cacao beans arrive in a factory from the areas where they grew. At the factory, the best beans are sorted and put into bags. Aft
Step2247 [10]

Answer:

See the answer below.

Explanation:

The arrival of cacao beans in the factory can be likened to the transcription of mRNA using a DNA template.

Sorting of the best beans at the factory can be likened to splicing process. During splicing, the introns are removed from the newly synthesized mRNA and the exons are joined together. The introns represent the non-coding portion of the mRNA while the exons represent the coding sequence.

The checking of bags by quality control can be likened to the final proofreading of the mRNA after splicing before being transported to the cytoplasm where they are used to synthesize proteins.

The large truck that transports the cacao beans represent the transport proteins that transport the mRNA to the cytoplasm while the chocolate-producing company represents the ribosome which is the site of protein synthesis.

4 0
3 years ago
Read 2 more answers
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