Answer: reproduction is reproducing
Explanation:lol
Hollow, that's why birds can fly. There is nothing in the bone to weigh them down.
Answer:
1. To send information about the environment to the brain
2. Transmit information to the effector organs of the human body
Explanation:
You don't have any listed but here they are:
Protein - Amino Acid
Carbohydrate - monosaccharide
Nucleic Acid - nucleotide
Lipid - triglyceride
Answer:
Invertebrates: Do not possess a backbone and doesn't have an internal skeleton. Has an exoskeleton. Are generally smaller than vertebrates. Possess an open circulatory system. The majority have compound eyes. Includes radial or bilateral body symmetry. Presence of a simple and unorganized nervous system. Mode of nutrition includes Autotrophic, Parasitic, and Heterotrophic. 95% of animal species are invertebrates. Flatworms, arthropods, sponges, insects are few examples of Invertebrates.
Vertebrates: Possess a backbone and has an internal skeleton. Does not have an endoskeleton. Larger than invertebrates. Possess a closed circulatory system. Do not have compound eyes. Has bilateral body symmetry. Presence of complex and highly specialized organ systems with specific functions. The mode of nutrition is usually heterotrophic. 5% of animal species are vertebrates. Mammals, fish, reptiles, amphibians, and birds are examples of Vertebrates.
