The half-life of an element (A) is 20,000 years. Another element (B) has a half-life of 100,000 years. Which of the following elements will be found in a higher concentration after 200,000 years?

Element B

Explanation:

Because the half life is longer, so it will take longer for it to completely disappear.

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.