Answer:
This question is incomplete
Explanation:
There is no way to predict what the phenotypic ratio will be if we are not given the genotypes/phenotypes of the previous generation. However the concepts of genetic crossings can be explained.
In genetics, there is often genes controlling a certain characteristic in an organism, and when this organism mates, it passes on its genetic information to its offspring. This information can be mapped and we can predict what the future generation will look like given the genotypes and phenotypes of the generation before.
The recessive trait in the F1 plants appears in a ratio of 3:1.
A cell. it is the smallest unit of life that can reproduce indepentantly
Answer:
Humans directly change the dynamics of the water cycle through dams constructed for water storage, and through water withdrawals for industrial, agricultural, or domestic purposes. Climate change is expected to additionally affect water supply and demand.
Fossil fuel production is another human activity that places considerable strain on drinking water — and not just because fracking and coal mining use a great deal of water, but because their waste products can pollute groundwater, and therefore drinking water, as well.Water resources face a host of serious threats, all caused primarily by human activity. They include pollution, climate change, urban growth, and landscape changes such as deforestation. Each of them has its own specific impact, usually directly on ecosystems and in turn on water resources.
