Environmental Science In Agricultural MCQ Question and Answer | Agriculture MCQ Question

Atmospheric content of CO₂ is 0.0341%.
In Earth's atmosphere, carbon dioxide is a trace gas that plays an integral part in the greenhouse effect, carbon cycle, photosynthesis and oceanic carbon cycle.
The atmosphere of Earth is composed of nitrogen (78%), oxygen (21%), argon (0.9%), carbon dioxide (0.0341%) and trace gases.

Greenhouse effect is warming due to an increase in temperature due to an increase in carbon dioxide concentration in atmosphere.
The greenhouse effect is the way in which heat is trapped close to Earth's surface by “greenhouse gases”.
The warming effect of the sun is greater for air with water vapour than for dry air, and the effect is even greater with carbon dioxide. The first quantitative prediction of global warming is due to a hypothetical doubling of atmospheric carbon dioxide.

Ecology of individual species and its population including the effect of other organisms and environmental conditions on every stage of life cycle is known as Autoecology.
Autecology is an approach in ecology that seeks to explain the distribution and abundance of species by studying interactions of individual organisms with their environments.
Autecological theory relates the species-specific requirements and environmental tolerances of individuals to the geographic distribution of the species, with individuals tracking suitable conditions, and having the capacity for migration at least one stage in their life cycles.

Those species whose populations have been seriously depleted and whose ultimate security is not assured are known as vulnerable species.
A vulnerable species is a species that has been categorized by the International Union for Conservation of Nature as being threatened with extinction unless the circumstances that are threatening its survival and reproduction improve.
There are currently 5,196 animals and 6,789 plants classified as Vulnerable, compared with 1998 levels of 2,815 and 3,222, respectively.

The term biosphere is used for a zone containing living beings in lithosphere, hydrosphere and atmosphere.
The biosphere also known as the ecosphere, is the worldwide sum of all ecosystems. It can also be termed the zone of life on Earth.
The biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere, cryosphere, hydrosphere and atmosphere.

Smog is produced due to Smoke and fog.
Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20^th century, and is a portmanteau of the words smoke and fog to refer to smoky fog due to its opacity and odour.
Smog is a serious problem in many cities and continues to harm human health. Ground-level ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide are especially harmful to senior citizens, children, and people with heart and lung conditions such as emphysema, bronchitis, and asthma.

Goitre is an enlargement of Thyroid gland.
A goitre is a lump or swelling at the front of the neck caused by a swollen thyroid. The thyroid is a small gland in your neck that makes hormones.
A goitre can present as a palpable or visible enlargement of the thyroid gland at the base of the neck.
The most common cause for goitre is iodine deficiency, commonly seen in countries that scarcely use iodized salt. Selenium deficiency is also considered a contributing factor.

The most abundant element in the body of organisms and the outside environment is Oxygen.
Carbon, hydrogen, oxygen and nitrogen are the most important elements. Small quantities of other elements are necessary for life.
Oxygen is the most common element in the human body, comprising approximately 65.0% of body mass. Most of the oxygen present is found in the form of water.

Carbon-dioxide content of atmosphere has increased in the past 150 years from 270 ⟶ 340 ppm.
In Earth's atmosphere, carbon dioxide is a trace gas that plays an integral part in the greenhouse effect, carbon cycle, photosynthesis and oceanic carbon cycle.
Estimates in 2001 found that the current carbon dioxide concentration in the atmosphere may be the highest in the last 20 million years.
The concentrations of carbon dioxide in the atmosphere are expressed as parts per million by volume. CO₂ absorption and release is always happening as a result of natural processes, the recent rise in CO₂ levels in the atmosphere is known to be mainly due to human activity.

In an unbalanced, skewed, distribution measure of range of central tendency is least biased.
A measure of central tendency is a summary measure that attempts to describe a whole set of data with a single value that represents the middle or centre of its distribution. It is a central or typical value for a probability distribution.