1. For any type of rock to become sedimentary rock, what must first happen The rock must chemically change.
The rock must be erupted from a volcano.
The must be eroded into sediment.
ebo...
The rock must melt in the Earth's interior.

The rock must be eroded into sediment

Explanation:

In order to form sedimentary rock, the accumulated sediment must become compacted and cemented together.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.