Answer: D. Adaptations help organisms survive and reproduce in a particular environment.
Explanation:
An adaptation can be define as the changes that occur in the behavior, structure and physiology of the organism so that organism become suited to survive and reproduce in the adverse environment. Adaptation results due to evolution of the living organisms through the process of natural selection as a result of interaction of the organism with the changing or unsuitable environment.
Crypts Feature is shared by all tonsils but is absent in other malt nodules. Anatomical structures called crypts are deep, narrow incisions into larger structures. The Crypts of Lieberkühn are a typical type of anatomical crypt.
It is not the only form of the tonsil, though; some tonsils also feature crypts. The deep regions of these tonsils are accessible to the outside world through these crypts, making them more susceptible to infection. An intestinal gland, also known as a Lieberkühn crypt or intestinal crypt, is a gland that can be found in the small and large intestines' intestinal epithelium between villi (or colon).
The epithelium that covers the glans and intestinal villi are made up of a variety of cells, including enterocytes (which absorb water and electrolytes), goblet cells (which secrete mucus), enteroendocrine cells (which secrete hormones), cup cells, tuft cells, and Paneth cells (which secrete antimicrobial peptides) and stem cells at the base of the gland.
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Answer:
The two basic types of sexual selection are intersexual (between-sex) and intrasexual (within-sex) selection. Intersexual selection occurs as a result of interactions between males and females of a species. One sex, typically males, will develop and display traits or behavior patterns to attract the opposite sex.
Explanation:
Sexual anatomy
These include rounded breasts, facial hair, pubic hair and penis size. The breasts of primates are flat, yet are able to produce sufficient milk for feeding their young.
Answer:
They increase the levels of catecholamines—a family of brain chemicals that includes dopamine.
Explanation:
Stimulants are a class of drugs that “stimulate” the body's central nervous system, which includes the brain and spinal cord. They increase the levels of catecholamines—a family of brain chemicals that includes dopamine. These chemicals are used in the brain processes to signal reward and motivation.
Rhizome
Rhizomes are a type of stem that grows horizontally underground. They are capable of propagating vegetatively or asexually. Rhizomes store starches and proteins that allow them to grow all-year-round underground. Examples of which would be ginger, turmeric and lotus.
