A. the evolution of the first air-breathing animals that could live on land
Explanation:
The event or set of events that is the most significant part of all the given options is that of the evolution of the first air-breathing animals that could live on land.
- The geologic time scale records deep time.
- It places events in order of their occurrence.
- Geologic time scale extends from the time of the earth's formation present.
- It preserves a record of land mark events that has shaped the earth.
- The evolution of the first air-breathing animals that could live on land is a significant event that occurred millions of years ago and it is a significant part of the geologic time scale.
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Explanation:
Tall, perennial grasses and herds of grazing herbivores are inhabitants of tropical and temperate biomes and not desert biomes.
Deserts do not support the growth of perennial grasses and a sustained herd population.
- A desert is an arid landscape with very little to no rainfall through the years.
- Plants needs water to manufacture their food and live.
- Since this condition is absent, they cannot thrive in such biomes.
- Grazing herbivores needs a lot of grasses to satisfy their foraging and ruminant nature.
- Since grasses are lacking, they cannot survive.
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Yes, when you see that plus sign on the top right corner of an element, it means it lost one electron, making the element a slightly more positive charge, (called a cation).
Muzzle or gauntlet are two good devices