1st Blank is hydrophilic. Which means it likes water.
2nd Blank is hydrophobic. Which means it repels water.
A way to remember hydrophobic is because it is scared or has a phobia of water.
The answer is 4, because if the ants smell the same dead smell on this particular ant in the colony, their initial reaction is to eliminate it. The chemical sprayed upon the ant acts as a stimulus for a particular behavior.
You would look for the chemical and physical properties because by identifying what properties those metals fit into it is easier to compare and contrast what metal they are
Answer:
I believe the correct answer is nucleus.
Differences.
Exoskeleton
1. Hard part that lies outside of the body
2. Develops from ectoderm
3. Composed mainly of hard non-living material called chitin.
Endoskeleton
1. Hard part that lies inside the body
2. Develops from endoderm
3. Composed of living material i.e. bone tissue
Similarities
Both endoskeleton and exoskeleton play a protective role. The endoskeleton protects internal body organs of the organism. The exoskeleton protects the soft body parts and appendages of the organism.
Both endoskeleton and exoskeleton provide structural support and shape to the concerned organism.
