Answer:
Ants protect a tree on which they feed (Option D)
Explanation:
Mutualistic relationship - relationship between two individuals / species where both involved benefit
A. Predation
B. Predation
C. Parasitism
D. Mutualism
Answer: The fight-or-flight response is most clearly associated with the release of epinephrine into the bloodstream.
Any physiological reaction occurring due to something which frightens physically or mentally is fight-or-flight response. In order to produce the fight-or-flight response the hypothalamus activation of the adrenal cortical system and sympathetic nervous system takes place. On receiving the signal from hypothalamus the sympathetic nervous system makes the actions of body speed up or gets tensed and body is in an alert condition.
The impulses are sent by the sympathetic nervous system to the smooth muscles and also glands. As a response to it epinephrine or adrenaline and the norepinephrine or noradrenaline is released by the adrenal medulla in the bloodstream. These stress hormones thus bring about changes in the body such as increase in blood pressure and heart rate.
Increases the carrying capacity for humans in a certain region is better soil for growing food.
<h3>What is Carrying capacity?</h3>
- Carrying capacity may be defined as the maximum number of individuals that can be supported by a habitat.
- Carrying capacity always depends on two factors:
- Food to eat.
- Space to live.
Therefore, the option that most likely increases the carrying capacity for humans in a certain region is better soil for growing food.
<h3>What determines carrying capacity?</h3>
- Food
- habitat
- water
- other necessities
available in the environment determine carrying capacity.
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The answer is d. all of the above.
Aquifers are underground layers of rocks which contain water and serve as important sources of freshwater. They are located below the water table and in the saturated zone. Still, aquifers are not rivers, the flow of underground water cannot pass from one aquifer to another.
Helminths are parasitic worms.
Parasitic Worms- Large macro-parasites called helminths, or parasitic worms, are typically visible as adults to the unaided eye. Many are soil-transmitted intestinal worms that infect the gastrointestinal system. Schistosomes and other parasitic worms live in blood vessels.
Gastrointestinal system- The alimentary canal, often known as the digestive system, is the body's mechanism for ingesting food and expelling solid waste. The mouth, throat, esophagus, stomach, small intestine, large intestine, and anus are all parts of the gastrointestinal system.
Helminths- Invertebrates known as helminths have elongated, flat, or circular bodies. Flukes and tapeworms are considered flatworms, often known as platyhelminths (platy is a Greek word that means "flat").
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