Parenchyma cells synthesize and store organic products.
The other criteria would evolve to match what the females like. The feathers would stop evolving to the color that increased mating and would get adapted to sth else such as having camouflage(the color of their ecosystem to stay hidden from predators).
By interacting with the external environment, if you mean how molecules are transported outside and into the cell then there are 3 main ways of transport.
Passive transport which refers to the movement of molecules into the cell without using any energy. This includes osmosis (movement of water), diffusion (movement of small molecules like salt) and facilitated diffusion which is the movement of large molecules such as glucose via by channels on the plasma membrane.
Note, in diffuson the cell wants equilibrium which means that the cell wants the same ratio of a specific type of molecule compared to the external envionrment. In other words, it's like a a very salty cell becoming less salty because the external envionrment is less salty.
Active transport refers to the movement of molecules against the concentration gradient using energy.
Bulk transport which refers to the movement of molecules that is influenced by the plasma membrane. One of the ways is for the plasma membrane to engulf particles or expel particles. This allows cells to remove waste.
Go look it up on Khan academy.
Answer:
<u>This is only my opinion</u> you may think differently
Explanation:
In my opinion, farming is good for the environment when it comes to organic farming since this farming practice fights global warning as well as erosion and it supports animals. Chemical farming can damage the earth since it used highly toxic pesticides and fertilizers and it alters plants to increase their numbers which I honestly prefer non modified food but in these days in time its everywhere sadly
(read on this and take some of my ideas to make your own answer do not copy and paste)
A. epithelial cells form from the body's skin