The answer of the first question is double fertilization !!! I don't get the second question so.... comment if you have that question !!!
Yes humans do have the obligations of preserving the habitats of chimpanzee as it is considered as an endangered species. Most of the human practices such as tree logging, environment pollution, exploitation of animals and others has led to many species being endangered to extinction.
Answer: When a blood cells is place in Hypertonic solution, water will rush out of the cell, the cell will shrinks or crenates. This is because the solute concentration outside the cell is greater than solute concentration inside the cell.
Explanation:
Hypertonic solution is a solution that have greater or higher solute concentration outside the cell compare to the solute concentration inside the cell.
Sponges are.... well.... just...... absorbent.