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Describe two pieces of evidence indicating that speciation does not always occur at the same rate.
Some species of moths on the Hawaiian Islands appear to have evolved during the past thousand years, while speciation in other organisms may take millions of years. The fossil record shows that periods of a few thousand years during which lose of species appeared were separated by much longer periods during which there was little speciation.
ADP-ATP system of energy exchange : In 1929 Lohmann, Fiske and subbarow published their discovery that the energy exchanges compounds in all biological systems are t
Why do few plants adapted to a dry environment open their stomata only at night? Throughout the day in dry habitats the guard cells become the stomata close and flaccid; concur
Why do membranes figure so prominently in eukaryotic cells? What essential function do they serve?
Explain the Copper Toxicity in Human? Acute copper toxicity in humans is rare and occurs due to inadvertent consumption of copper salts. Symptoms include vomiting, diarrhoea, h
Explain in brief about the Trail Making Test In part A of this procedure the subject must connect in order a series of circled numbers randomly scattered over a sheet of 81\2 X
Q. Determine the sucrose content in a sample of honey? This activity will help you to: • estimate the non-reducing sugars and total sugars in a sample of honey, • check t
Which of the below determines the major difference between bryophytes (pron: bry-oh-fites) and tracheophytes (pron: tray-key-o-fites)? a) Tracheophytes can make their own food
Levels of organization of Matter- Metazoa The smallest structural units of all matter are subatomic particles, mainly electrons, protons and neutrons. The next larger units a
Define about the nutritional deficiencies? The nutritional deficiencies which have been identified in the group of elderly are of total calories, protein, vitamin A, vitamin C,
types of enzyme
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