Pteridophytes are more developed than bryophytes why ?​

How do you date a sample of rock that you suspect as being one of the earliest on earth

What is the function of the somatic nervous system? connects the brain and the spinal cord to the rest of the body carry signals to the muscles and glands includes all nerves controlling the muscular system and external sensory receptors controls internal organs like the heart and bladder

Individuals do not compete directly for resources, but are prey for the same predator