1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
victus00 [196]
3 years ago
13

Darwin hypothesized that there are definite steps to natural selection. Consider the model of bacterial resistance to antibiotic

s. Use the Roman numerals (I - III) to guide you through the steps to describe how Darwin would explain antibiotic resistance.
A) There is a change in the environment: an antibiotic is added. Some of the bacteria adapt to the new environment. They survive and reproduce.

B) In any population, variation exists. Some bacteria are resistant to antibiotics. Most bacteria die, but the bacteria that are resistant survive and reproduce.

C) Sexual reproduction of bacteria cause variation. Some bacteria survive antibiotics and some do not. Regardless, over time all of the bacteria should become extinct.

D) In a population of bacteria that are exposed to antibiotics, some bacteria are able to change their genetic make-up and survive. The new genotype is passed on to offspring.

Geography
2 answers:
Sloan [31]3 years ago
6 0

Answer:

B. In any population, variation exists. Some bacteria are resistant to antibiotics. Most bacteria die, but the bacteria that are resistant survive and reproduce.

Explanation:

Akimi4 [234]3 years ago
3 0

Answer:

A) There is a change in the environment: an antibiotic is added. Some of the bacteria adapt to the new environment. They survive and reproduce.

Explanation:

I. Variation: Different organisms manifest different appearances and behaviors. It depends whether it's a body size, hair color, certain marks on one's face, tone of the voice, number of offspring. Some attributes are the same in every individual: for example, everybody has two eyes, one mouth, one nose, etc.

II. Inheritance: Certain attributes are passed from a parent to an offspring. They are passed heritably, while some other attributes are very environmentally oriented and have nothing to do with inheritance, but the adapting to the environment.

In this phase, certain species produce more offspring and they are fighting for their survival. Due to that, major environmental changes occur as they produce more and more each time, which leads to struggling for resources, and it's further passed to the next generations.

III. Selection -- it's manifesting by the scheme where organisms who are better at adapting to the environmental changes have a bigger chance to mature. When they do, they reproduce and pass all the qualities to their offspring. Therefor, bacteria that is better at adapting to the new environmental changes, is more likely to survive and reproduce and it goes on like that in circles.

IV Population is growing bigger and bigger and as a result we have an evolution.

You might be interested in
A) It is easier to lift up a load in water than in air, why?​
Alexxandr [17]

Short Answer:

buoyancy

Long answer:

    An object submerged in water displaces water according to how much it weighs. In fact, the water will push upward against the object with a force equal to the weight of the water it displaces. For example, a bowling ball and a beach ball that are the same size will have the same volume. The bowling ball, however, is more massive and thus denser than the beach ball. In both cases, the water pushes up against the ball with a force equal to the weight of water it displaced. In the case of the bowling ball, it weighs more than the amount of water it displaced, so it sinks. The beach ball, however, displaces very little water and the air inside it is much lighter than the weight of the water it displaced, so it floats.When lifting something underwater, you have the help of water pushing the object upwards along with your own strength, which is why it's easier to pick up things underwater than on land.

Source:

https://www.wonderopolis.org/wonder/why-is-it-easier-to-lift-someone-in-water-than-on-land

7 0
3 years ago
Where is The greatest concentration of public land in the US?
Gemiola [76]

The greatest concentration of public in the US is in Texas.

4 0
3 years ago
Five factors that affect climate ​
nikitadnepr [17]

Answer:

The answer is latitude,elevation,vegetation and winds.

6 0
3 years ago
Read 2 more answers
Can someone please put these in orders
FinnZ [79.3K]
Hi I labeled everything, see photo attached

Hope this helps ʕ•ᴥ•ʔ

6 0
3 years ago
Why would updraft start to rotate
creativ13 [48]
Wind shear, the updraft is high speed and wind shear is good enough, you’ve got a supercelluar funnel cloud
6 0
3 years ago
Other questions:
  • Where are places that have mild climates?
    11·2 answers
  • Which is the most accurate method of showing the entire surface of the earth?
    13·1 answer
  • Uses movement of water or wind to spin a turbine
    10·1 answer
  • Describe how a laser-ranging device works.
    8·1 answer
  • What conditions create storms such as tornadoes and hurricanes, and what effects do these storms have?
    10·2 answers
  • Describe the themes and concepts used to study the interaction between globalization and the world’s cultural geographies
    14·1 answer
  • What are the winds that bring seasonal showers to south asia?
    6·2 answers
  • Another name for the Caribbean region is
    12·1 answer
  • In what forms do we find water in the atmosphere?​
    12·2 answers
  • Topic/Lesson: Biodiversity
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!