The weak, overgrazed pasture will be particularly vulnerable to interrill, rill, and gully erosion, which can result in the loss of important topsoil, a decrease in soil organic matter, and a drop in the nitrogen pool available to feed your fodder. Compaction of the soil is exacerbated by excessive grazing.
First of all, it is a change, not a charge.
Phenotype is physical manifestation of gene(physical), not a change, so it is not phenotype.
Variation is a state of being genetically diverse, but it is not a change, therefore it is not variation.
Genetics is the name of a field, and it is not a change.
Adaption are changes of a population overtime, through natural selection.
It is adaptions
Question:
I failed to find the options, but I will post the way by which you can construct Punnett squares.
Answer and Explanation:
First, you need to know both parental individuals´ genotypes. From these genotypes, you will get all the possible gametes for each parent, following the principle of simple segregation.
Then, by using a simple square, you will make the crosses. This is:
- You will locate all the possible gametes of one parent on the top of the square
- You will place all the possible gametes of the other parent on the left edge of the square.
- Once you have done that, you will perform the crosses. You will look for the intersection between each parent´s gametes and place all the involved alleles in the intersection-box. These are the possible genotypes, and they will be written within the square.
In the attached files, you will find an example of the cross between two pure-breeding plants.
Answer:
A. Cell wall and chloroplast
B. Nucleus (the dark grey circle)
Explanation:
Answer:
The atmosphere is the largest reservoir of the nitrogen as it is composed of 78% of Nitrogen. Although 78%, this is not used by the organisms directly as the nitrogen molecule exists in nature in the form of divalent joined via triple bonds.
These triple bonds require a great amount of energy to be broken and used. Only a few prokaryotic organisms called nitrogen-fixing bacteria have the capability to break these triple bonds as they contain enzymes-nitrogenase complex which converts the atmospheric nitrogen to usable forms like ammonia, nitrates and nitrites. About 92% of the atmospheric nitrogen is fixed through this way rest through thunderstorms and Haber's process.
Thus, nitrogen-fixing bacteria is the answer.
