What causes ocean water to be colder at the poles than at the equator? A. Sunlight hits at an angle, so the warmth is spread out.
B. Sunlight hits directly, so the warmth is more concentrated.
C. Cold water currents move from the poles to the equator.
D. Seasonal winds push warm water away from the coasts.

i have to report this, it doesn't relate to biology

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.