Which two stars are red in color? Please help is for my science homework

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell