Answer:
Epinephrine
Explanation:
Epinephrine, which is also referred to as adrenaline, is the active sympathetic hormone that is secreted by the medulla of the adrenal glands into the bloodstream to initiate the body’s fight-or-flight response to stress or threat, causing increased blood pressure, sugar metabolism, heart rate, breathe rate, muscle strength as well as sweat. Pete's sighting of a bear as a threat stimulates the sympathetic nervous system to initiate the secretion of epinephrine which brings about the fight-or-flight response of the body to increase alertness of the body.
Answer: Helianthus annuus.
Explanation:
True
Explanation:
The water molecules move from areas of high concentration to areas of low concentration to make an equivalent between the two.
I hope this helps at least a little :D
Answer:
D. Chemoautotrophs
Explanation:
Autotrophs in plain are organisms that synthesize their own food while hetrotrophs are organisms that do not synthesize their own food.
Chemotrophs (Chemoautotrophs and Chemohetrotrophs) are a group of organisms that obtain their energy through the oxidation of inorganic molecules, These organisms require carbon to survive and reproduce.
Chemoautotrophs are able to produce inorganic molecules by the fixation of CO2 from their immediate environment. The energy required for this process is got from Nitrogen, Magnesium, Sulphur etc.
Chemohetrotrophs are a class of chemotrophs that are unable to synthesize their own food but rather ingest complex molecules like carbohydrates from the environment.
Phototrophs are a group of organisms unlike chemotrophs that depend on the source of light or sunlight for synthesizing its food or organic molecules.
Photoautotrophs are basically photosynthetic plants which are able to carry out photosynthesis ie the conversion of CO2 and H2O to give Glucose and Oxygen in the presence of sunlight.
Photohetrotrophs are a class of organisms that do not synthesize their own food but rely on other organisms or already made organic molecules.
Because the lung has two bronchi, it can still function if one bronchus is blocked by a foreign object. No gas exchange will happen to the affected side, and the other lung will compensate for the loss of air. The blocked portion though can become inflamed and can lead to infection and damage.
