D. There are three parts of the cell theory and this one is never stated.
<u>Answer:</u>
<em>Meeting current needs while preserving the resource for the future is the objective of sustainable farming. </em>
<u>Explanation:</u>
<em>Sustainable farming uses methods that increase productivity but also understands that the precious natural resources</em> are to be reserved for the future generations also.
Cultivating different types of crops to meet the needs of the <em>population while using non renewable resources in limited amount</em> is the method advocated by sustainable farming. Nutrient replenishment has to be done adequately because once the land is depleted of its <em>nutrients it becomes unsuitable for cultivation. </em>
Over irrigation also produces negative effects by increasing the soil salinity. <em>Productivity increase coupled with resource conservation is the aim of sustainable development. </em>
A phenotype is a physical characteristic which is visible. Hence when the resulting combinations have two dominant alleles or even one dominant allele, the dominant characteristic is exhibited. The recessive characteristic is exhibited only when both the alleles are recessive.
To find the ratio of phenotypes, we need to place the genotype of the father and mother in a grid form ( attached grid figure)
Here we have two Ff phenotypes which is dominant and two ff phenotypes which is recessive
Hence the ratio is 2:2 or 1:1
When looking at graphs showing 800,000 years of past climate data, there is a direct relationship over time between temperature and the concentration of carbon dioxide in the Earth's atmosphere is a <u>true</u> statement.
Explanation:
Many paleoclimate studies and research done by observing events like glacial cycles etc over the past 800,000 years about climate changes over the past years have proved the strong linear relationship between temperature and carbon dioxide concentration in the Earth’s atmosphere.
These studies clearly reiterate that when the carbon dioxide concentration in the atmosphere increases, the temperature also increases; and when the CO2 concentration decreases, the temperature also decreases. Carbon dioxide also controls the amount of greenhouse gases in the atmosphere by controlling the temperature.
Increased CO2 levels increases temperature which in turn will increase the evaporation of greenhouses gases present in the atmosphere including CO2 from the reservoir; however, the CO2 can stay in the atmosphere for very long time. All of these factors have led to various climate changes globally
.
Plants use energy from sunlight to turn water and carbon dioxide from what they get into an energy-rich sugar called glucose. This process is called photosynthesis, which means “making things with light”. In photosynthesis, the energy in light is absorbed by photopigments.
