8. The year is 2095 and the sun has burnt out leaving Earth cold & dark. All biological & physical processes has stopped and humans are on the verge of extinction What essential Earth phenomenon is being referenced? (4 Points) Climate Change
Climate System
Climate Variation
Climate Combustion

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

What pattern of migration do whales follow?