All categories

2 years ago

2. How did fossils contribute to Darwin's ideas about

Biology

2 answers:

Sphinxa [80]2 years ago

6 0

Answer:

b) Fossils supported Darwin's ideas about

common ancestry and the relationship of

living species to fossil species.

Explanation:

<h3>How did fossils contribute to Darwin's ideas about changes in species over time?</h3>

<em><u>Fossil remains have been found in rocks of all ages. Fossils of the simplest organisms are found in the oldest rocks, and fossils of more complex organisms in the newest rocks. This supports Darwin's theory of evolution, which states that simple life forms gradually evolved into more complex ones.</u></em>

<h3>Fossils supported Darwin's ideas about</h3><h3>common ancestry and the relationship of</h3><h3>living species to fossil species.</h3>

<u>Common ancestry allows Darwin to infer what happened in the lineage leading to modern mammals. The fact that present day birds and reptiles have sutures but no live birth is evidence that sutures were present in the lineage leading to modern mammals before live birth evolved.</u>

Fossils showed that all species are the result

Fossils showed that all species are the resultof gradual changes over time.

<em><u>Fossils. Fossils provide solid evidence that organisms from the past are not the same as those found today; fossils show a progression of evolution. Scientists determine the age of fossils and categorize them all over the world to determine when the organisms lived relative to each other.</u></em>

Fossils explained how species develop

<em><u>Homologous features</u></em>

<em><u>Homologous features If two or more species share a unique physical feature, such as a complex bone structure or a body plan, they may all have inherited this feature from a common ancestor. Physical features shared due to evolutionary history (a common ancestor) are said to be homologous.different traits.</u></em>

Fossils showed how humans had affected the

Fossils showed how humans had affected thetraits of organisms for thousands of years.

<em><u>Evidence for early forms of life comes from fossils. By studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth. There are gaps in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind.</u></em>

Deffense [45]2 years ago

3 0

Answer:

B. Fossils showed that all species are the result of gradual changes over time.

<em>I hope this helps you</em>

You might be interested in

Signals from sense organs going to the brain and spinal cord go through __________. A. Hypothalamus B. Receptors C. Sensory neur

Kryger [21]

Answer:

Sensory neurons

Explanation:

Sensory neurons receive impulses and carry them from the sense organs to the spinal cord or brain.

5 0

2 years ago

Read 2 more answers

The central portion of a neuron where most of the metabolic work is performed is called the axon. nucleus. mitochondria. cell bo

alexdok [17]

Most of the metabolic work is in the:
Cell Body

4 0

3 years ago

One method for separating polypeptides makes use of their different solubilities. The solubility of large polypeptides in water

Naddika [18.5K]

Answer:

The solubility of any substance in water depends on its polarity. The polar molecule dissolves more easily in the water than the non polar molecule. Amino acids have different polarity at different pH.

(a) (Lys-Ala)3 : The (Lys-Ala)3 contain more positive charge and highly polar the at pH 7 as compared with the (Gly)20 that remains uncharged and has less polarity.

(b) (Glu)20 :This amino acids negatively charged at pH 7 and highly polar than the (Phe-Met)3 which is non polar or less polar and hence least soluble in water.

(c) (Asn-Ser-His)5 is highly polar at pH 3 as compared with the (Ala-Asp-Gly)5 that contains the carboxylate groups of Asp residues that are partially neutral. The (Asn-Ser-His)5 contains = the imidazole groups of His residues are fully polar and soluble in water.

(d) (Asn-Ser-His)5 is polar at pH 6.0 because both have polar side chains Ser but (Asn-Ser-His)5 is only partially partially protonated due to the His side chains. Thus, (Asn-Ser-His)5 is more soluble in water.

6 0

3 years ago

Why do you think that some vaccines, such as the flu vaccine, need to be given every year?

DochEvi [55]

Answer:

Because flu viruses evolve so quickly, last year's vaccine may not protect you from this year's viruses. New flu vaccines are released every year to keep up with rapidly adapting flu viruses.

5 0

3 years ago

Read 2 more answers

Suppose you travel to a tropical place like the Bahamas and watch the coastal poikilotherms, such as fish, crabs, and starfish,

PilotLPTM [1.2K]

Answer:

The correct answer is -

exposure of the opposite environments to the species and see if they are able to be active in cold waters.

If they are then species of organism in Maine and could have more ice-nucleating agents which are responsible for their high ability for activity in cold waters.

Explanation:

To test the assess if the Maine species of organisms are especially able to be active in cold waters an experiment can be designed where one needs to place the species or animals from Maine and Bahamas in reverse conditions.

Maine animals are placed in warm water environments and species from the Bahamas can be placed in cold water. Finding if they are able to adapt in reverse condition by calculating various processes and motion, if yes then it shows that it is not a special ability to survive in cold temps. However, if it is not then the Maine poikilotherms are specially designed for their environment. In case of yes then species of organism in Maine and could have more ice-nucleating agents

6 0

3 years ago