Which is an example of a parasite and host relationship?

A parasitic relationship is one in which one organism, the parasite, lives off of another organism, the host, harming it and possibly causing death. The parasite lives on or in the body of the host. A few examples of parasites are tapeworms, fleas, and barnacles.

Tapeworms are a common parasite that can live in humans. They go into the digestive system and get food by eating the hosts partly digested food.

Explanation:

D. 8.090 × 10¹⁰

Step-by-step explanation:

Use Avogadro’s number to convert atoms of Cu to moles of Cu.

1 mol Cu atoms = 6.022 × 10²³ atoms of Cu

      Moles of Cu = 4.872× 10³⁴ × 1 /6.022 × 10²³

      Moles of Cu = 8.090 × 10¹⁰ mol Cu

Thee are 8.090 × 10¹⁰ mol Cu in 4.872× 10³⁴ atoms of Cu.