Answer:
Intraspecific interactions, where they are the same species, or interspecific interactions, where they are from different species.
The gradual evolution for the family Equidae (horse family) has been well documented within the fossil record.
The structures of chloroplast and mitochondria are similar. Both organelles consist of a smooth outer membrane, folded inner membrane (in chloroplasts called lamellae, in mitochondria called cristae), and fluid intracellular space (in chloroplast called stroma, in mitochondria called matrix). Only these structures allow those organelles to perform their function. The presence of folded inner membranes enables a formation of compartments inside the organelles. Differences in concentrations of hydrogen ions in those compartments are important for photosynthesis in chloroplasts and cellular respiration in mitochondria.
Answer:
A.) everything that surrounds an organism
Explanation: