Answer:
Touching, Smelling.
Explanation:
Touching will be useful to detect stimuli like coldness and hotness.
Smelling on the other hand will help to make observations on smell and change in smell. These two are among the five senses that we use to make observations as we record what we see, hear, touch and feel, smell and taste.
Answer: A semi-permeable membrane is that which only allows certain
substances to pass through.
It could be over run with the minor consumers and such causing massive problems
The green house effect is a natural process that warms the Earth surface.
((Carbon dioxide))
