Answer:
The platypus serves as a 'bridge' animal between nonmammals like birds and reptiles, which maintain their testicles in their body cavity, and placental and marsupial mammals, which hold their testes in an external scrotum."
Answer:
An individual may carry a very beneficial genotype with a resulting phenotype that, for example, increases the ability to reproduce
Explanation:
Answer:
having more air spaces around the spongy mesophyll cells