BIOLOGY HIGH SCHOOL

What system includes the living components of the Earth?

Answers

Answer 1
Answer: The biosphere is a system and part of the earth's spheres that encompasses all living organisms that thrive and survive in the planet earth. In most  of these organisms, they are comprised of cells. hence cells are the fundamental basis for these  organisms. 
Answer 2
Answer: The biosphere and the biotic factors are the system and the factors which include all the living components and living beings of the Earth. The opposite would be the abiotic factors or the non-biosphere which don't represent living components of the Earth.

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_____ can be single or multi-cells and have organization within their structure

Answers

Eukaryotes is the answer

According to evolutionary history and taxonomy, tigers resemble ____________ more closely than they resemble fish. A) hydra B) gorillas C) sea urchin D) grasshoppers

Answers

The correct answer is option B, Gorillas

Tiger resembles gorillas as these two animal species are high order vertebrates and live in the same habitat i.e on land. Most of their physical and biological features are same or their functionality concepts are same. While fish are primates of lower order and live in water , thus they posses many distinctive feature which are absent in tigers. Insects are Arthropods and are invertebrates.

I think its B hope it helps

Half of the polar bears in a small population die. This population may experience changes due to _____. gene flow mutation genetic drift natural selection

Answers

Correct answer: Genetic Drift

Genetic drift is defined as the random change in the allele frequency of a population is changed by chance or due to random changes in the environment. It is a random process that can lead to large changes in the overall population in a short period of time. It is a mechanism of evolution and it does produce the adaptation.

Hence, the correct answer would be genetic drift.

Answer:

Genetic Drift

Explanation:

Genetic drift refers to the evolutionary agent that brings about the changes in the gene pool of the population by some chance event. In the given example, half of the polar bear population was wiped out of the habitat by any chance event such as natural calamity, epidemic disease or any other random events. Since no mutation or natural selection was responsible for the death of polar bears, it is an example of genetic drift.  

Genetic drift is more effective in small populations. And the size of the population of the polar bear was also small to allow the genetic drift to cause the changes.  

Why is it important for natural monopolies to exist?

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it is important for natural monopolies to exist because : they provide easy access to a variety of goods and services

Natural monopoly happens when a company could serve almost the entire market with a lower cost

hope this helps
They provide easy access to a variety of goods and services.

Which of the following best describes the velocity of an object ? A.) 30m/s
B.) 30m east
C.) 30m/s east
D.) 30m?s^2

Answers

Answer:

C.) 30m/s east  

Explanation:

Velocity has a speed and a direction. 30 m/s is a speed, and east is a direction.

The following best describes the velocity of an object - C.) 30m/s east.

Velocity is the speed with a direction and therefore, is a vector quantity. It includes the speed with the displacement.

  • It is the rate of speed and direction change in the position of an object.
  • Vector quantity is a measure or quantity that has magnitude and works in a particular direction.
  • velocity = distance / time
  • V = d/t direction
  • v = m/s east,
  • the meter is the unit of distance and second is the unit of time, and east is the direction

Thus, The following best describes the velocity of an object - C.) 30m/s east.

Learn more about vector quantity:

brainly.com/question/24815698

An ecosystem would best be described as a geographical areawhere only plants live.
where plants, animals, landscape and climate all interact.
where plants, animals, landscape and climate are all independent of each other.
where organisms are independent of each other.

Answers

Where plants, animals, landscape and climate are all independent of each other.
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