True or False?

Matthias Schleiden and Theodor Schwann came up with the cell theory after observing cells for many decades. They determined that all living things are made up of cells, that cells are the basic units of structure, function and physiology, and that living cells can only come from pre-existing cells.

For approximately 200 years, microscope technology remained relatively unchanged. In the 1850s, however, Carl Zeiss, a German engineer, developed improvements for the device! Joseph Jackson Lister also helped eliminate the unequal bending of light hitting the microscope lens, leading to further improvements!

Lion cubs are born with blue eyes. Their eyes change to brown or amber when they are two to three months old. Lion cubs are about 1.5 kg when they are born, which is about 1% of a lion’s adult weight! You could put them into a pet carrier bag and take them to the shopping mall!