Answer: The correct answer is - D) a red allele present on at least one of two homologous chromosomes (with genotype Rr).
Dominant trait (depicted by dominant allele, which is present in capital letter such as 'R' for red) is the one that masks the expression of recessive trait (depicted by small letter such as 'r' for white).
For a dominant trait to express, its genotype can be homozygous dominant ( that is having both the alleles as dominant RR) or heterozygous dominant (having both dominant and recessive allele such as Rr).
On the other hand, for a recessive trait to express, genotype must be homozygous recessive (such as rr for white flower).
In the given question, when a red flower (which could be Rr or RR genotype) is crossed with white flower (rr) and if it produces red flower, it will certainly have the heterozygous genotype that is Rr (as it will inherit 'R' allele from one parent and 'r' allele from another to become red flower).
Thus, a red allele (R) must be present on at least one of two homologous chromosomes.
The spinal cord is in the backbone (aka spine). The spinal cord is part of the central nervous system
How I remember where the spinal cord is the root of the words spine and spinal cord is similar
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer: The law of mass action suggests that the rate of a chemical reaction is directly proportional to the product of the masses of the reactants. In this, each mass is raised to a power, which is equivalent to the coefficient of that reactant in the chemical reaction.
For example- For the chemical reaction-
aA + bB → C + D
Rate of the reaction α [A]ᵃ [b]ᵇ
Rate of the reaction = k [A]ᵃ [b]ᵇ
where, k = rate constant
a+b = order of the reaction.
B.) population graph
C.) number pyramid
D.) number graph
Answer:
Air pollution
Explanation:
Pollution is the release of substances into an environment above a level that it becomes harmful to the organisms living in such environment. Pollution can occur both in aquatic and terrestrial environment. Pollution in the terrestrial environment can either be in the soil or in the air.
Burning of wastes leads to the release of smoke into the atmosphere. Smoke from waste burning consist of particulate matters, water vapour and varying levels of carbon doxide, carbon monoxide, oxides of nitrogen, oxides of sulphur, etc., depending on the content of the waste. These components have both short and accumulative long term effects on the environment. The effects include;
In an ecosystem when waste is burnt it emits out pollutants which are released in air thus causing air pollution.
Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.When waste is burnt, it gives out pollutants in the air thus causing air pollution.
Hence, the problem which is most directly caused by burning waste is air pollution.
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