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abruzzese [7]
3 years ago
9

According to the principle of faunal succession, what must be true of the fossils on a layer below?

Biology
2 answers:
sesenic [268]3 years ago
8 0
The answer to this is older, but it's not a proven fact even though schools teach it as if it were. It is still just a theory if you think about it with how much the earth moves, areas of rock could be complete upside down and no one would know, it would be like history in reverse.
mezya [45]3 years ago
6 0

Answer:

Option (B)

Explanation:

According to the principle of faunal succession, the fossilized plants and animals are deposited in the layers of sedimentary rocks in a vertical manner succeeding one another and they are very distinct, dependable and easily recognized over a broad horizontal distances.

The fossils that are found at the bottom layer is the oldest fossil which have deposited in the ancient time. And the fossils that are present at the top are the youngest fossils and are of geologically very recent.

Thus, the correct answer is option (B).

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3 years ago
During the life cycle of a seedless plant, a sporophyte releases
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Answer:

Seedless vascular plants are plants that contain vascular tissue, but do not produce flowers or seeds. In seedless vascular plants, such as ferns and horsetails, the plants reproduce using haploid, unicellular spores instead of seeds. The spores are very lightweight (unlike many seeds), which allows for their easy dispersion in the wind and for the plants to spread to new habitats. Although seedless vascular plants have evolved to spread to all types of habitats, they still depend on water during fertilization, as the sperm must swim on a layer of moisture to reach the egg. This step in reproduction explains why ferns and their relatives are more abundant in damp environments, including marshes and rainforests. The life cycle of seedless vascular plants is an alternation of generations, where the diploid sporophyte alternates with the haploid gametophyte phase. The diploid sporophyte is the dominant phase of the life cycle, while the gametophyte is an inconspicuous, but still-independent, organism. Throughout plant evolution, there is a clear reversal of roles in the dominant phase of the life cycle

Explanation:

7 0
3 years ago
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The body loses water in a variety of ways. Put the water output mechanisms in order from greatest contribution to fluid loss (1)
kirza4 [7]

The maximum to minimum body water loss occurs by: Urine production, Skin losses, Lung respiration and minimum by Feces

<h3>What are the ways in which body loses water ?</h3>

Through breathing, sweating, and peeing, the body continuously loses water. You become dehydrated if you don't drink enough water or other liquids.

The majority of fluid loss happens through the stools, sweat, and urine, but it's not only those things. The quantity of body fluid lost daily through the skin, respiratory system, and water in the feces that cannot be readily measured is known as insensible fluid loss.

Physical exercise also influences increased respiratory water loss due to the increased expiratory volume and frequency of breathing. Various environmental elements like temperature, humidity, radiation, and atmospheric pressure mostly affect sweating and urine water loss.

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4 0
1 year ago
What is the main difference between heterotrophs
aleksley [76]

Answer:

Heterotroph. Autotrophs are organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis). Heterotrophs cannot synthesize their own food and rely on other organisms — both plants and animals — for nutrition.

Explanation:

Heterotroph. Autotrophs are organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis). Heterotrophs cannot synthesize their own food and rely on other organisms — both plants and animals — for nutrition.

8 0
3 years ago
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A Tropical Rain Forest biome is normally limited to low altitudes near the equator.
Kay [80]

Answer:

True

Explanation:

Tropical rain forest are one of the important biomes of the world that is characterized by a short or no dry season and a precipitation of overall 60 mm each month. They are also known as lowland equatorial evergreen rainforest. If we talk about location, they mostly are found between  fall between the Tropic of Cancer and the Capricorn since they lie near to equator and they receive sufficient amount of sunshine and rain.

Due to their location near the equators, they receive greater amount of sunshine than other biomes and when sunshine is greater the rate of water evaporation is also greater that results in more rainfall.


Hope it help!

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3 years ago
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