Answer: Option A ,Band C.
Explanation:
Sympatric speciation is the evolution or isolation of new species from the original populations of species occupying in the same geographical area. Sympatric speciation commonly occur due to sexual selection of mates can cause reproductive barriers or isolation which keep gene pools separate. A plant with extra set of homologous chromosomes is an example of sympatric speciation.
Answer:
Testes are the structure in male organism where sperm cells are produced. The process in which sperm cells are produced called spermatogenesis. Ovaries are the structure in female organism where egg cells are produced. The process in which egg cells are formed is called oogenesis.
When sperm of male combine with egg of female, it produces a fertile zygote and this zygote turns into a new organism.
Pancreas
It is a large gland behind in the stomach that secretes digestive enzymes in the duodenum. Inside the pancreas are Islet of Langerhans. It is considered as an endocrine gland producing various hormones. Pancreas also produce pancreatic enzymes that act as digestive enzyme that assist in digestion and absorption of nutrients in the small intestine. These helps to break macromolecules such as carbohydrates, proteins and fats.
This is attitude adjustment theory.
He adjusted his attitude based on the surroundings.
