Struggled with this earlier but because of the high altitude only some animals can live there and thrive because of the lower oxygen levels
Because it's lighter, flexible, and lastly it's easily to heal. Hope this helps! :D
The scenario listed that could be a mutation that causes members of a population to die out would be the genetic
Your answer is correct. Chitin provide the strength to insect exoskeletons. Cellulose is the strength for plant. Starch and glycogen are energy sources for life.
The best answer is A
Saltwater fish are hypotonic to their surroundings. This means their blood has a higher water concentration than the surrounding sea water.
Due to the fact that there is more salt and less water outside their bodies, there is a tendency to take in salt and lose water.
To counter this, salt water fish drink a lot of the sea water and urinate very little. Special cells in the gills actively eliminate salt at the cost of extra energy and these fishes do not absorb any salt from the water they drink.
