Answer:
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Explanation:
1. Amphibians can breathe through their skin while humans cannot.
2.Frogs and other amphibians respire by alternatively dilating and contracting the buccopharyngeal cavity, while humans cannot
3.Some Amphibians such as, the larval amphibians respire in water, while it isn't possible for humans to do such
4.Humans only have one form of respiration, while Amphibians have multiple.
5.The lungs of amphibians are simple saclike structures that internally lack the complex spongy appearance of the lungs of birds, mammals, and humans
Answer:
<u>B. Animals are always biotic components of an ecosystem. </u>
Explanation:
The living components of the environment are known as biotic factors. Biotic factors include plants, animals, and micro-organisms.
The question is incomplete. The complete question is:
Question: Impulses originating in the part of the brain called the medulla would most directly affect which body structure?
a. A leg muscle
b. A ligament
c. An arm bone
d. The heart
Answer:
d. The heart
Explanation:
The medulla oblongata contains a number of reflex centers for regulating vital body functions such as heartbeat, breathing, and vasoconstriction. The medulla contains several nuclei, a collection of neuronal cell bodies.
For example, impulses originated in the cardiovascular center regulates the rate and force of the heartbeat and the diameter of blood vessels. Impulses from the cardiovascular center flow along sympathetic and parasympathetic neurons. An increase in sympathetic stimulation from the cardiovascular center of medulla increases heart rate and contractility while a decrease in sympathetic stimulation decreases heart rate and contractility.
Answer:
Could you attach an actual pdf of the food chain so we can see?
The producer is whatever makes the food for the first organism in the chain.
Explanation:
