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Greeley [361]
3 years ago
5

You are studying a group of fossils, and you notice that a particular trait is present in the older fossils, but that this trait

disappears in the more recent species. What is the meaning of this observation?
Biology
1 answer:
7nadin3 [17]3 years ago
5 0

Answer:

Is an evolutionary sign in the specie

Explanation:

Trough the passing of time, the species changes little by little depending on the environmental conditions and the genetic traits that has from their parents.

Evolution is long term process in which the species start to adapt to their new environmental conditions.

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Which of the following represents organisms in a food chain?
Lisa [10]

Answer: c seeds, mice, snakes

Explanation:

<u>a hawks, owls, eagles NO</u>

These animals all eat some form of meat, and they are on the top of all of their food chains. If you put these animals in a room with no food, there'd be no food chain, and they would got out at each other until there was one left, and there'd be no advatanges because 1. they can all fly and 2. they are all top consumers. The same thing goes for D except hyenas can't fly.

<u>b deer, rabbits, cows NO</u>

This is not a food chain because all of the animals are herbivore, so they only eats plants and will not eat each other.

<u>c seeds, mice, snakes YES</u>

The seeds are a producer which is to be eaten by a consumer (the mouse), and which are then eaten by the predator, the snake.

<u>d hyenas, vultures, crows NO</u>

<u />

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great Valentines Day! :-)  

- Cutiepatutie ☺❀❤

7 0
3 years ago
Refer to the Biochemistry in Focus section of your text for this chapter to answer this question Hyperglycemia in individuals wi
Vlada [557]

Answer:

C

Explanation:

pyruvate dehydrogenase is the enzyme which catalysis pyruvate to acetyl Co -A. Thus,it  ensures the formation of link reaction/ bridge reaction for linking glycolysis with Citric acid cycle. Therefore, inhibition of this enzyme, prevent link reaction, and there reduction in pyruvate utilization and therefore prevent the  commencements of Citric acid cycle, with consequent  reduction in glucose oxidation. as there is no  reaction of acetyl Co A (from link reaction from pyruvate )   with 4C oxaloacatate in the kreb Cycle to form Citrate in Kreb's cycle. Thus the heart  depends on fatty acid supply for energy.

3 0
3 years ago
If two players push against each other with 30 N of force and no yardage is gained or lost, what is the net force?
jolli1 [7]

Answer:

its 30 N

since it didn't change it stays the same 30N.

4 0
2 years ago
Astronomers have determined the temperature of a newly discovered star. When their results , which of the following will they us
Luda [366]

Answer:thousands of kelvins

Explanation: just got it right on test

7 0
3 years ago
What is the process to determine the mass of a powdered substance using a weigh boat?
Arisa [49]

Answer:

Explanation:

The mass of the substance is determined by subtracting the first reading from the second. A container holding the substance of interest is placed on the balance and weighed. This is the first reading. The substance to be used is removed from the container and the container weighed again.

5 0
3 years ago
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