In a pond ecosystem, the primary consumers are tadpole larvae of frogs, fishes and other aquatic animals which consume green plants and algae as their food. These herbivorous aquatic animals are the food of secondary consumers. Frogs, big fishes, water snakes, crabs are secondary consumers.
Adrenal glands
The adrenal glands consist of different parts which produce different types of hormones, most commonly ones that help the individual cope with stress, both long-term and short-term. These hormones include epinephrine (adrenaline), norepinephrine (noradrenaline), and cortisol. For short-term stress, hormones (epinephrine and norepinephrine) are released to prepare the body for physical exertion (i.e. in fight-or-flight situations). On the other hand, cortisol helps a person cope with long-term stress and this hormone has also been known to reduce inflammation as well.
Other hormones produce by the adrenal glands include those essential for regulating fluid and electrolyte balance, and glucose in the body.
Answer:
Rats have same physiology, similar organs and similar body plans just like humans.
Explanation:
Brown rats experience similar genetic diseases as humans because of same physiology, similar organs, similar body plans and also belongs to similar group of mammals. Due to these similar physiology, organs and body structure, the rats also experience similar genetic diseases just like humans. So that's why Scientists chose brown rats to study genetic diseases occur in humans.
That would be the epithelial tissues