The half-life of carbon-14 is about 7000 years. Assume that a tree died and became a fossil 14,000 years ago. How much of the original carbon-14 would you find in the wood today?

One-fourth of the original carbon-14 isotope would be found in the wood today.

Explanation:

The half life of carbon-14 7000 years

Since the tree died and became a fossil 14000 years ago, number of times the tree has undergone decay in 14000 years = 14000/7000 = 2

Therefore, the carbon-14 would have undergone decay twice or passed through two half-lives

After one decay, 1/2 of the original sample remains

After another decay, 1/2 * 1/2 = 1/4 of the original sample remains.

Therefore, one-fourth of the original carbon-14 isotope would be found in the wood today.

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.