<span>Gradient. A gradient, in the biological sense, is a series of progressively increasing or decreasing differences in the growth rate, metabolism, or physiological activity of a cell, organ, or organism.</span>
Answer:
If larger seed became available, directional selection will act in favor of bigger beak finch.
Explanation:
In the case that more large seeds were to become available, then directional selection will start to influence in the beak size, favoring those individuals with bigger beaks. Those individuals with shorter beaks will start to disappear as these animals won't be able to eat the larger seed.
Directional selection <em>increases the proportion of individuals with an extreme phenotypic trait,</em> in this case, large beaks.
This selection presents more frequently in those cases in which <em>interactions between living organisms and the environment</em> modify in the same direction.
Animals that have a backbone are called Vertebrates. (Mammals, for example.)
The movement of a snake is referred to as “Slithering.”
The Stapes is the smallest bone in the human body.
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Answer:
The correct option is: c. in blood
Explanation:
A kidney is a bean-shaped organ, that is present below rib cage in the retroperitoneal space. In vertebrates, the kidneys are present in pair. Each kidney receives blood from the paired renal arteries. The main function of a kidney is to filter the urea present in the blood with the help of filtering units, called the nephrons.
