In the 1600's, robert hooke, and english scientist, used a crude microscope to examine bits of cork. cork is derived from the bark layer of certain trees. upon seeing the cork under the microscope, hooke named the spaces within the cork 'cells', because they looked like empty rooms of a monastery. although he coined the term cell, an ironic feature of cork is that it is dead plant material. knowing this, what feature of cells would robert hooke not have been able to observe under the microscope while looking at cork?

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.