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dalvyx [7]
3 years ago
8

Which fossil would most likely be found in the oldest rock layer?

Biology
1 answer:
ololo11 [35]3 years ago
4 0

Answer:

C

Explanation:

Trilobites were alive the longest time ago, so they would be found in the oldest rock layer.

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________ allow materials to be exchanged between the blood and tissues, ________ carry blood towards the heart, and ________ car
Anuta_ua [19.1K]

Answer:

b.  Capillaries; veins; arteries

Explanation:

Capillaries are the blood vessels with very thin walls. They serve as a site for an exchange of substances such as respiratory gases, nutrients, and toxins between the blood and the cells of the tissues. Veins are the blood vessels that mostly pick the deoxygenated blood from the body cells and deliver it to the heart for oxygenation. On the other hand, arteries are the blood vessels that mostly carry the oxygen-rich blood. They pick the oxygenated blood from the heart and deliver it to body cells. Therefore, veins carry blood towards the heart while arteries carry it away from the heart.

6 0
2 years ago
What three differences between RNA and DNA.
Solnce55 [7]

Answer:

DNA is double-stranded, while RNA is single-stranded. RNA contains ribose as a sugar, while DNA contains deoxyribose. Also, three of the nitrogenous bases are the same in the two types (adenine, cytosine, and guanine), but DNA contains thymine while RNA contains uracil.

6 0
3 years ago
The body of fish is streamlined why​
Ronch [10]
Hopes this helps:

Answer:

The body of a fish is streamlined because, it increase the speed of the fish in the water. The more the streamlined shapes more easier for the fish to swim in the water.
3 0
2 years ago
Puppies have inherited genes from both parents and share many of the same characteristics.
kumpel [21]

Answer:

Explanation:

Although no two look pups alike, these puppies have inherited genes from both parents and share many of the same characteristics. Organisms grow and develop following specific instructions coded for by their genes. I hope  this helps!

7 0
9 months ago
"by measuring the relative abundances of two stable isotopes of oxygen - 16o and 18o - in some fossil deposit, or in an ice core
maks197457 [2]
Stable isotopes refers to those isotopes that do not undergo radioactive decay. Oxygen atoms with atomic number of 16 and 18 are examples of stable isotopes. These isotopes of oxygen are usually found in substances such as polar ice and calcite. These substances are usaually measure with isotope fractionation and the ratios obtained are used to estimate water temperature of ancient oceans. From this, scientists can find out facts about ancient climates, 
5 0
3 years ago
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