The most important trait that modern fish had developed was the transformation of their skeleton from cartilage to bones. This was called ossification. Eventually, bony fishes and sharks dominated the waters because their body structure development which helped them as swimmers is advanced compared to earlier fishes.
Answer:
A biotic factor is something that is alive and living. So it would be plants, humans, animals anything that's actually alive.
Explanation:
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Venomous snakes are found in the United States areas included places are rattlesnakes, copperheads, cottonmouths/water moccasins, and coral snakes.
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What are six venomous snakes in United States with their habitats and geographic range?</h3>
Venomous snakes are found in the United States areas included places are rattlesnakes, copperheads, cottonmouths/water moccasins, and coral snakes. A venomous snake can bite is called an “envenomation.” Although death from the dangerous venomous snake bites is rare, nd a worker with a severe envenomation or allergy to snake venom can die from a venomous bite.
Geographic Range: In the United States, there is about species of venomous snake in every state except Alaska. About 8,000 people are bitten every year, but thanks to modern medicine, antivenom keeps the number of fatalities at only a handful.
Habitats: Snakes live in a wide variety of habitats including forests, swamps, grasslands, deserts and in both fresh and salt water. Some are active at night, others during the day.
So we can conclude that Venomous snakes are found in the United States areas included places are rattlesnakes, copperheads, cottonmouths/water moccasins, and coral snakes.
Learn more about venomous snakes here: brainly.com/question/1192409
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Answer:
"GFP contained in synaptic vesicles moved into the synaptic cleft by exocytosis."
Explanation:
Synaptic vesicles are small membrane sacs that carry neurotransmitters from the cell body where they are produced, to the presynaptic membrane of the terminal button where they are released. The release zone of the presynaptic membrane contains voltage-dependent calcium channels. When an action potential depolarizes the presynaptic plasma membrane,
-channels open, and
flows into the nerve terminal to trigger the exocytosis of synaptic vesicles, thereby releasing their neurotransmitters into the synaptic cleft