Pleas ( :
which of the following body parts has voluntary muscles?
a) arm
b) heart
c) intestine
d) stomach

The arms, because we can control them freely.

Arms - A

Explanation:The correct answer would be arms due to the fact that us as humans are able to move our arms freely. The reason for that is because we have joints. The other options we’re unable to control, and they’re inside out body rather than outside of us.

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.