Mackerel live in the surface waters of the sea. Toadfish live on the seabed in deep water. (b) The concentration of oxygen is higher in the surface waters than it is in water close to the
seabed. Suggest why.

Christie's doctor recommends that she eat 40 grams of protein a day. she's already consumed 50% of her protein recommendation for the day. how many servings of the given snack should christie have to meet her daily protein recommendation?

The image shows a sandstone formation with visible bands of different colors. what do the bands indicate about how this sedimentary rock was formed? choose two answers. a). the rock was made from more than one material. b). water was absent during the compaction and cementation process. c). sediments and other matter were deposited in layers before lithification. d). the rock was stretched horizontally by the pressure from surrounding rocks. e). layers of hot liquid in the rocks cooled and solidified at different tempatures

Which nutrients contain nitrogen in addition to carbon hydrogen, and oxygen? a) vitamins. b) proteins. c) carbohydrates. d) fat