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Dima020 [189]
3 years ago
14

What are the three inference (conclusions) Darwin made based on his observations?

Biology
1 answer:
Aleksandr [31]3 years ago
6 0

Answer:

1. A Struggle for Survival

2. survival will reproduce

3. Superior adaptive variation

Explanation:

1. Observation: overproduction of offspring that can possibly survive.

CONCLUSION: A Struggle for Survival, most of this offspring fight for food and water.

2. Observation: variation in species: member of the same species have different ways of identification, which are color, sex, e.t.c

CONCLUSION: Those individuals that survive and reproduce do so in consequence  of "superior adaptive variation" (they are "more fit")

3. Observation: Variation heritable through selection: most survival pass there favourable adaptation to their offspring.

CONCLUSION:  Superior adaptive  variation will be passed on to offspring generation.

     

reference: https://www.mun.ca/biology/scarr/4250_History_II.html

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True or false the consumption of irradiated food during pregnancy can cause birth defects
guajiro [1.7K]

Consumption of irradiated food during pregnancy can cause birth defects is false.

<h3>What are birth defects?</h3>

Birth defect in pregnancy are the structural or functional abnormalities occur during intrauterine stage. It can be detected either prenatally or in infancy state.

The primary causes are genetic, Socioeconomic, Environmental and other factors.

Chromosomal abnormalities and single gene defects are the major genetic abnormality based birth defects, such as Down syndrome and cystic fibrosis etc.

When parents are related by their blood group can also leads to high risk of rare  genetic birth defects.

Hence, the statement is false

Learn more about birth defect, here:

brainly.com/question/9483070

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8 0
2 years ago
Explain how seasonal fires benefit grassland ecosystems.
Soloha48 [4]

Answer:

Without fires, there would be no life on Earth . Fires are key to maintaining the proper oxygen concentration in the atmosphere; fire regulates the carbon cycle and life, as we know it, is based precisely on carbon

Explanation:

Although we tend to think of fires as a human invention that kills plants, animals, people, fire, as with rain or wind, is an essential natural component, basic to maintain the planet's biodiversity.

As for example, grassland ecosystems are also benefited by the same fires that allow renewal, and generate natural sustainability on the earth through the carbon cycle.

3 0
3 years ago
Sand that extends from a coast into open water is called a barrier spit. <br> a. True <br> b. False
AysviL [449]
<span>It is True - Sand that extends from a coast into open water is called a barrier spit.

Barrier spits are formed when there is a deposit on the shoreline due to the lateral movement of water.

The waves are known to hit the shoreline at a particular angle which cause the lateral movement of water accompanied with the sedimentation along the coastline in the direction of the wave motion.</span>
6 0
3 years ago
How does natural selection or human evolution affect disease susceptbility
devlian [24]
<span>Investigations of the legacy of natural selection in the human genome have proved particularly informative, pinpointing functionally important regions that have participated in our genetic adaptation to the environment. Furthermore, genetic dissection of the intensity and type of selection acting on human genes can be used to predict involvement in different forms and severities of human diseases.</span>
4 0
3 years ago
Draw an mRNA strand that is complementary to the DNA strand AATTGC. circle a nucleotide
saw5 [17]

The answer would be:

DNA : A A T T G C

mRNA: U U A A C G

The base pairings in mRNA is essentially the same, T to A, G to C however, uracil with substitute thymine to pair up with an Adenine base. In summary:

G to C C to G

A to U T to A

7 0
3 years ago
Read 2 more answers
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