It's some change in the conditions around the organism, which the organism can detect and respond to. A change in temperature, more light, or something physically poking the organism are examples.
Answer:
an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
Explanation:
The
changeable nature of models is considered a limitation because when the model alters,
the answers that were achieved from the model may also transform.<span> <span>What this
means is that outcomes that’s been extracted from changeable models can be true
at a certain moment, place or situation, but the conclusions may not be
objectively true.</span></span>
Answer:
Why the red blood cell disc in shape is because that is how blood cells carries oxygen around. This is why blood type is important, and how people with a blood type of AB negative is so rare, this is because the AB negative blood cells doesn't have the shape to carry the oxygen needed for the body.
Hope this helps!