What do people mean when they are "double jointed" ?

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body

How do plants obtain more sunlight a.) they lean towards the light b.)they grow straight up c.) they only live in sunny areas, like the tropics d.) they stay low to the ground