Answer: Natural gas is a relatively clean burning fossil fuel
Burning natural gas for energy results in fewer emissions of nearly all types of air pollutants and carbon dioxide (CO2) than burning coal or petroleum products to produce an equal amount of energy.
Explanation:
Latitude is a geographical coordinate that is used to locate the north and the south position of a location on the earth's surface.
Explanation
- Latitude can be defined as an angle that varies from 0 degree at the equator to 90 degree at the poles.
- Latitude affects the temperature of the earth in the following ways :-
- As a person moves away from the equator the temperature of the regions away from the equator falls this is because the region receives less sunlight.
- The shape of the earth is not round it is spheroid that is the reason all the regions on the surface of the earth do not receive the same amount of sunlight.
From the above given options the 2 correct choices are
- Latitude determines the duration of the day:The areas at the equator (i.e at 0 degree latitude) the length of the day is said to be 12 hours,now as the latitude increases to 80 degree (i.e at the polar circles) the length of the day increases to 24 hours or decreases to zero.
- Latitude creates Polar and temperate zones:There are three types of latitude zones-Arctic,temperate and tropic zone.Latitude is considered as an important parameter in the classification of zones as it correlates to the amount of sunlight a region receives.
The purpose of MHC molecules is to bind and display pathogen-derived peptide fragments on the cell surface so that the relevant T lymphocytes can recognise them.
<h3>What are MHC proteins, or major histocompatibility complex proteins?</h3>
MHC, or the major histocompatibility complex, is a set of genes that produce proteins located on the cell surfaces and that aid the immune system in identifying foreign objects. In all higher vertebrates, MHC proteins are present. The complex in humans is also known as the HLA (human leukocyte antigen) system.
<h3>What exactly are MHC proteins, and why are they crucial?</h3>
The major histocompatibility complex (MHC) is a collection of genes that code for cell surface proteins that play a significant part in the immune response. MHC molecules have a major role in how they display antigens.
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