What did Darwin infer from his observations of organisms in South America and the Galápagos Islands? a.
The organisms on the Galápagos Islands were virtually identical to mainland organisms.
b.
A small number of different plant and animal species had come to the mainland from the Galápagos Islands.
c.
The organisms on the Galápagos Islands were completely unrelated to mainland organisms.
d.
A small number of different plant and animal species had come to the Galápagos Islands from the mainland.

the child will have heterozygous dominant chromosomes as characters of his father are dominant over the characters of his mother.

the child is heterozygous

a electronegativity decreases beacuse the size of nucleus is bigger.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.