All living organisms are constantly involved in a struggle for existence. This was proposed by? by Sunday | Sep 6 | Biology JAMB | 0 comments A. Morgan B. Darwin C. Lamarck D. Wallace Correct Answer: Option B – Morgan Users Also Read These:The aspects of growth in living organisms include…The insurance principle which expects the insured…The study which involves the inter-relationship…A characteristic that can possibly be shared by both…The organization is constantly in a state of flux