Earths magnetic field serves to deflect most of the solar wind whose changrd particles would otherwise strip away the ozone layer that protects the earth from harmful ultraviolet radiation
Evolution of birth food chain. etc
Answer:
Cell membranes: Lipids, protein and carbydrates
Diffusion is the movement of materials across a membrane of greater concentration gradient to lower concentration gradient.
Osmosis is the movement of a solvent (usually water) across a selectively permeable membrane.
Active transport is the movement of materials against concentration gradient at the expense of energy.
Answer:
Socrates will always question any man with a reputation for wisdom. He wanted he/she to examine his/her live and become aware of their own ignorance rather than thinking that they know things when actually they know nothing.
The three classes of people Socrates questioned were the politicians, Poets and craftsmen.
He found all three lacking in the real wisdom (Higher Things or Human Excellence) as they only possessed human wisdom in their respective trades.
First trophic level. The plants in this image, and the algae and phytoplankton in the lake, are primary producers. They take nutrients from the soil or the water, and manufacture their own food by photosynthesis, using energy from the sun.
