Final answer:
Organisms grow and develop based on genetic instructions, which ensure that offspring share characteristics with their parents. Regulatory mechanisms and homeostasis are important for coordinating internal functions and responding to environmental stresses. The growth of populations is influenced by factors like average age and the local economy.
Step-by-step explanation:
Growth and Development: Organisms grow and develop according to specific instructions coded for by their genes. These genes provide instructions that will direct cellular growth and development, ensuring that a species' young (Figure 1.4) will grow up to exhibit many of the same characteristics as its parents. Another important principle is that of regulation and homeostasis, where organisms require multiple regulatory mechanisms to coordinate internal functions, respond to stimuli, and cope with environmental stresses.