Answer: Option <em>A. Oak Tree</em>
Explanation: Oak Tree is a example of a producer.
D. ; Eukaryotic cells are bigger, younger, and more complex
Answer:
Density Independent
Explanation:
Density independent is the factor that will affect a population no matter its size. Temperature, natural disasters, and oxygen levels all influence this.
<span>Surface proteins are specialized integral membrane proteins that allow communication between the cell and the extracellular space.
Membrane spanning proteins are integral proteins that span the entire phospholipid bilayer.These trans membrane proteins contains one or more membrane spanning domains as well as domains from four to several hundred residues long,extending in to aqueous medium on each side of the bilayer.</span>
