Diffusion across the alveoli
Plants produce oxygen, energy (glucose).
Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms. ... He observed that organisms (pea plants) inherit traits by way of discrete "units of inheritance". This term, still used today, is a somewhat ambiguous definition of what is referred to as a gene.
The cause of increase in the snake population most likely due to environmental factors, such as, rainfall, temperature, sunlight, and food availability. Good health in female snakes is also a factor which makes snake population increase. Snakes ensure that their offsprings are born during warm season.
Im quite sure that the answer is C). because i dont know of too many creatures that burrow under water besides stingrays.
