When an aquatic mammal begins to dive, it actually exhales and pushes oxygen out of its lungs. This decreases its buoyancy so it doesn't have to use as much energy to fight the tendency to rise to the surface. So, how can these animals stay under for so long if they aren't "holding their breath?" Observe the following graphs. Compare where the 3 animals (2 mammals and 1 bird) store their oxygen.

the cytokine-activated janus kinase (jak)-signal transducer and activator of transcription (stat) pathway has an important role in the control of immune responses. dysregulation of jak-stat signaling is associated with various immune disorders.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

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i wish i could with all of them i can barley see the first one so here's the answer to the first one b

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

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