Which of the following is nicknamed the "powerhouse" of the cell?

Mitochondria

Explanation:

Mitochondria is the powerhouse of the cell.

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.