What is mechanical energy? me asap

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Which accurately compares concave and convex lenses?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)