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vfiekz [6]
3 years ago
10

Out of 5 undisturbed horizontal beds of sedimentary rock, we can say that

Biology
1 answer:
Alexxx [7]3 years ago
6 0
B:the lowest layer is the oldest

the layers above are newer because they were formed on top of them. the lower the layer the older it is. similar with rings of a tree. the smaller rings are older than the bigger ones because the smaller rings were formed first then the bigger one grew around it
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Which of the following is a trait that links modern primates into a single taxonomic group?
swat32

Answer:a. Retention of five functional digits on the tore and hindimbs

Explanation:

The presence of five digits or pentadactyly on the fingers as well as on the toes makes the primates distinct from other mammals. Also the keratin nails are present on each digit makes these organisms distinct from other mammals.

The five digits on the hindlimbs helps in grip of objects and on toes helps in climbing.

6 0
3 years ago
Which part is a fluid cavity of the earthworm that gives it a hydrostatic skeleton?
Anvisha [2.4K]

Answer: Option B) Coelom

Explanation:

Hydrostatic skeleton is the type of skeleton possessed by soft-bodied animals such as earthworms and sea anemones. Fluid is secreted to fill the cavity spaces (coelom) in their body. The fluid then presses against the muscular body wall, causing the muscles to contract exerting pressure against the fluid thereby causing motion

Thus, coelom is the fluid cavity of the earthworm that gives it a hydrostatic skeleton

8 0
3 years ago
Read 2 more answers
Your friend brings you rocks with a thick layer of oxidation weathering, and no other visible signs of weathering. this is a clu
Vsevolod [243]
<span>A moist environment because physical weathering processes such as oxidation take place most quickly in the presence of water. There are three types of weathering, physical, chemical, and biological. For the physical weathering, there are two main types. Freeze-thaw cycles and exfoliation. Obviously the freeze-thaw cycles require water and the exfoliation generally happens through thermal expansion and contraction which doesn't require water. But since neither of these mechanisms were observed, that doesn't indicate if the area was wet or dry. Biological weathering is caused by plants or animals breaking down rocks via chemical (acid) or mechanical (root growth) means. Life generally indicates the presence of water, but since this form of weathering wasn't observed, we still don't have enough data. Chemical weathering is caused by rain water reacting with the rocks to form new minerals and salts. There are several types such as acidic rainwater dissolving part of the rock, and oxidation. With this in mind, let's take a look at the available options. A moist environment because there is a greater density of oxygen in the atmosphere in the presence of water. * Yes, we need a moist environment, but the density of oxygen is fairly constant world wide regardless of how moist or dry the environment is. So this is a bad choice. A moist environment because physical weathering processes such as oxidation take place most quickly in the presence of water. * Water speeds up chemical weathering of all types. So this is the correct choice. A dry environment because the increased albedo of deserts encourages physical weathering processes such as oxidation. * Yes, the increased albedo of deserts does speed up spalling, but oxidation is a CHEMICAL weathering process, not a PHYSICAL one. So this is a bad choice. A dry environment because in the absence of water oxidation is the dominant weathering process. * Water speeds up oxidation quite a bit. And since the observed oxidation is thick, there's been quite a bit of weathering. So this is a bad choice.</span>
6 0
3 years ago
While we are in deep sleep, our bodies shut down our ability to move our limbs. This would involve shutting down
guajiro [1.7K]

Answer: Voluntary, Peripheral

Explanation:

5 0
3 years ago
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Which is a result of chemical weathering?
monitta
The erosion or disintegration of rocks, building materials, etc., caused by chemical reactions (chiefly with water and substances dissolved in it) rather than by mechanical processes
3 0
3 years ago
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