Answer:
A)
B)
Explanation:
RF value in thin-layer chromatography plate is defined as the ratio of distance moved by the steroid spot (A) to the distance migrated by solvent front(B)
Hence, mathematically
------Equation (A)
a) Here cm and cm
Substituting the given values in above equation, we get -
b) Here cm and cm
Substituting the given values in above equation, we get -
Answer:
gram and peas
Explanation:
The endosperm is not present in all given mature seeds except gram and peas.
The release of toxins such as heavy metals into the water bodies has been deeply frowned at .This is because toxins usually have a negative effect on aquatic species. The negative effects include:
- Developmental dysfunction
- Gender imbalances
Toxins also gives rise to developmental dysfunction in the animals . The toxins ensures that there is a shortage by interfering/reacting with the nutrient needed for the growth of these organisms.
The issue of gender imbalance is also true as some toxins causes water bodies to be warmer which favors the presence of female aquatic species such as reef fish.
Toxins causes aquatic bodies to be short of oxygen supply as the elements or compounds released vie for oxygen with the animals which may lead to less reproduction rates and death in severe occasions.
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<span>The choices can be found elsewhere and as follows:
</span><span>a)folded mountains
b)fault-block mountains
c)canyons
d)plateaus</span><span>
I think the correct answer is option B. Mountains that have developed because of compressional stress—colliding plates that force rock layers upward—are called </span>fault-block mountains.
Gene pool, sum of a population's genetic material at a given time. The term typically is used in reference to a population made up of individuals of the same species and includes all genes and combinations of genes (sum of the alleles) in the population..
I got this straight from google, hope it helps