Carbon-14 has a half-life of approximately 5,730 years. how many half-lives have occurred in a sample that contains less than 10 percent of the original amount of the parent isotope?

4 Half-lifes

Explanation:

1 half-life : 50%

2 half-life : 25%

3 half-life : 12.5%

4 half-life : 6.25%

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.