External respiration (correct answer) involves the exchange of oxygen and carbon dioxide within the environment.
The exchange of wastes through the skin is just called excretion by sweating.
There is no exchange of nutrients that occur in the lungs but rather absorption of nutrients is the function of the gastrointestinal tract.
The exchange of oxygen and carbon dioxide within the cell is called cellular respiration and involves carrying oxygen from the blood to the cell then the cell uses it as the final electron acceptor in the electron transport chain. The metabolic wastes of the cell, primarily carbon dioxide, goes now to the bloodstream to be exchanged for oxygen in the lungs.
A dependent variable is how they are recording, measuring or keeping track of the science experiment their doing.
A independent variable is the things/types there using to compare what is the most/least affective in the experiment.
A controlled variable is something that stays the same in the experiment or a group/set used for comparison
A cell wall. Animal cells do not have a cell wall have plants have a cell wall.
Answer:
Plasma.
Explanation:
The main connective tissue of human body is blood. Blood mainly composed of the plasma and formed elements. Formed elements include white blood cell, red blood cells and platelets.
Blood plasma is present around 55% in composition. The blood plasma contains various coagulant factors, ions, proteins and chemicals. Plasma is the fluid portion of blood that needs to be drawn in presence of the anticoagulant compound.
Thus, the answer is plasma.
By conserving the residential water by recycling we can keep the fresh water as a renewable resource.
<u>Explanation:</u>
Preserving water is significant on the grounds that it keeps water unadulterated and clean while ensuring the earth. Private water use incorporates both indoor and outside family unit water utilization. Water is utilized inside for showering, flushing toilets, washing garments, washing dishes, drinking, and cooking.
Open air water use incorporates washing the vehicle and watering the grass, pools, and plants. This water alludes to the procedure which prepared the wastewater and changes over it to a reusable structure. Additionally gather water during the blustery season to use in latrine flush, watering plants, sprinkle in the nursery, and so on. Utilizing crude water like seawater or non-cleaned water in the latrine is likewise acceptable.