What level of organization is shown in the human heart

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.

Pls ill give u brainliest which of the following is true about science? 1. political conditions are unable to influence it. 2. economic concerns may prevent it from solving problems.