a~ shared characteristics are features or qualities that organisms or species have in common.
c~ shared characteristics can be characteristics that existed in the common ancestor and still exist in modern organisms.
d~ shared characteristics can be new characteristics that have been modified from what was found in the common ancestor.
i hope these are correct, if they aren't, i'm so sorry.
btw, i love your username!!
rose from blackpink? Imaoo :D~
C, some of my close family does logging stuff, and I hear about this all the time.
U just check a few of them and pretty much close the app then they should be cleared :)
Answer: By us people breathing in oxygen and breathing out carbon dioxide.
Answer:
Cells in a large multicellular organism communicate with each other by chemical signals. These signals are passed from one cell to another. To receive and respond to a chemical signal, a cell must have a <u><em>receptor</em></u> for that chemical.
Explanation:
To generate a physiological response, all cells in the body have special proteins called receptors. These receptors are involved in detecting a chemical signal and generating a response. The receptors are specific for different kind of chemical signals. For example, a dopamine receptor will bind a dopamine molecule whereas an insulin receptor will be able to bind an insulin molecule. Apart from chemical signals, some cells might also respond to mechanical signals.
