Answer:
<em>True</em><em> </em><em>.</em><em> </em><em>I</em><em> </em><em>think</em><em> </em><em>it's </em><em>true</em><em>.</em><em> </em><em>hope</em><em> </em><em>this</em><em> </em><em>helps</em>
Answer: probably Nerve cells (for some)
Explanation: Nerve cells are also called neurons. Their function is to communicate with other neurons and the body. The adaptations of a nerve cell are dendrites with receptor proteins, an axon, myelin, synaptic terminals and neurotransmitters.
Answer:
Government is the political direction and control exercised over the actions of the members, citizens, or inhabitants of communities, societies, and states; direction of the affairs of a state, community, etc.; political administration: Government is necessary to the existence of civilized society. A government has the sole role of providing direction and influencing the success of a country. As such, this role can be fulfilled through attracting investors, providing country residents with equal opportunities to exercise their innovation and creativity. The government's most important purpose is protection. The government deals with essential services. An effective government invests in its people, advances opportunities for shared prosperity, and raises the revenues needed to support the public structures that support inclusive economic growth.
Answer:
Following are the roles of the digestive, excretory and endocrine systems in terms of homeostasis:
- The endocrine system regulates the secretion of various hormones and homeostatic mechanisms in response to signals of the hypothalamus and pituitary glands.
- The excretory system maintains homeostasis by purifying the blood and getting rid of toxic waste from the blood.
- The digestive system is mainly involved in the transfer and regulation of nutrients from food.
Explanation:
Role of Endocrine System:
- The endocrine system mediates all the chemical signaling in the body.
- Hormones are chemical messengers that the endocrine system uses to maintain chemical homeostasis.
- Endocrine system manages glucoregulation by controlling the secretion of the hormones glucagon and insulin by the pancreas. Low and high blood sugar levels are sensed by the brain which then signals the endocrine system to release glucagon and insulin respectively.
- The endocrine system is also indirectly involved in thermoregulation. A low core temperature signal received by the hypothalamus initiates the release of TSH by the pituitary gland and then that of T3, T4 thyroid hormones that stimulate shivering thermogenesis in the skeletal muscles.
Role of Digestive System:
- The digestive system regulates the amount of nutrients absorbed in the body.
- Although the absorption of nutrients in food is not exactly according to bodily needs, the absorption of dietary iron and calcium is strictly regulated by the digestive system.
Role of Excretory System:
- The excretory system carries out osmoregulation which is the maintenance and regulation of water and salt levels in the blood.
- The excretory system regulates the excretion of toxic waste from the blood.
- Excess water, salts, urea and bilirubin (produced as a result of RBC break down) are some of the excretions.
Answer:
The correct answer is "low concentration of oxygen".
Explanation:
One of the key characteristic of aquatic dead zones is its low concentration of oxygen. Aquatic dead zones are classified into this category for being hypoxic, condition that do not support the growth of most marine life. Most aquatic dead zones are in these conditions because of a high content of nutrient pollution caused by human activities.