Which of the following is not a good polling technique? A. asking clear questions B. using a push poll C. using a large sample D. using a random sample

Answers

Answer 1

Answer: Question is which is NOT a good technique.
Answer is "B" and here's why:

A) Clear questions -- good. People understanding the question will answer accurately.
C) Large sample size -- good. Answers will be more accurate with more people asked (like if you flip a coin 1,000 times its going to be closer to 50% heads than if you only flipped it twice)
D) Random sample -- good. Avoids your own bias in choosing who to ask.

B) Push poll -- bad. Pretends to be unbiased, the pollster's real objective is to get a person thinking in a way that is to their advantage. Some political candidates do this just before elections.

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Why is it that two species cannot occupy the same niche for an extended period of time?

Answers

A niche is a specie's function in its habitat or its level on the food chain, so two species competing at the same level for the same food and habitat eventually one species will have to migrate or starve due to lack of food.

Answer:

In terms of ecology a niche can be defined as role or function an organisms play within the ecosystem. A niche represent the interaction of an organism with the living and non living components of the ecosystem. It is represented by predator-prey relationships, parasitic and mutualistic properties and other functions. The two species cannot occupy the same niche for an extended period of time, this can be explained by competitive exclusion principle. According to this principle, no two species can have the same ecological niche. The two or more species competing for the same resource in an ecosystem the one species having more favorable adaptations will be able to thrive resources better than others. Therefore, this will result in the decrease in abundance, migration and extinction of weak and less competitive species.

Fish is an example of a complete protein.
a. True
b. False

Answers

umm let me think......................................... the answer is true

it is very true truetrue true

Which is the best definition of a phylogenetic tree

Answers

The options attached to the above question are given below:

A. A table of classification that is based only on physical characteristics

B. Eight levels of taxonomic categories that are used to classify organisms

C. A branching chart that depicts evolutionary relationship among organisms

D. Organisms organized based on structure and genetic comparisons

ANSWER

The correct option is C.

A phylogenetic tree refers to a diagram, which represents evolutionary relationships that exist among organisms. Phylogenetic tree has many branches, which represents how different species evolved from a series of common ancestors. The relationships among the living organisms is usually based on the similarities and the differences in their physical or genetic features. A phylogenetic tree can be described as rooted or non rooted based on the depth of information they offer.

Answer:

C: a branching chart that depicts evolutionary relationship among organisms

Explanation:

100% on edg

Unlike gradualism, punctuated equilibrium involvesa. a slow change in evolution over time.
b. stable periods of change interrupted by rapidly occurring change.
c. a steady change in evolution over time.
d. species that are said to be in equilibrium. Student Answer: C

Answers

Unlike gradualism, punctuated equilibrium involves stable periods of change interrupted by rapidly occurring change. The correct answer is B.

Unlike gradualism, punctuated equilibrium involves stable periods of change interrupted by rapidly occurring change. Correct option is b.

Unlike gradualism, which suggests a slow and continuous change in evolution over time, punctuated equilibrium proposes that species experience long periods of relative stability (equilibrium) during which there is little or no significant change. These stable periods are "punctuated" or interrupted by relatively short bursts of rapid evolutionary change. These bursts of change may result in the appearance of new species or major adaptations in response to environmental shifts or other factors.

Punctuated equilibrium, proposed by paleontologists Niles Eldredge and Stephen Jay Gould in the early 1970s, challenges the traditional view of a smooth, gradual evolution and highlights the importance of considering periods of stasis and rapid change in the fossil record.

To know more about equilibrium:

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Does dna sythesis occur during interphase or mitosis

Answers

Yes, for eukaryotes which have a nucleus and therefore have to do nuclear division (mitosis), DNA replication occurs during a specific period of interphase. Protein synthesis, which includes transcription and translation, occurs throughout interphase. But neither replication nor protein synthesis occur during M-phase.

a scientist kept 500 grams of a radioactive material in a container. after 60 minutes, he observed that 62.5 grams of the radioactive material was left in the container. based on the observation, which of these is the most likely inference drawn by the scientist?

Answers

After the 1st half-life 250 g of the radioactive material will be left.
After the 2nd half-life 125 g of the radioactive material will be left.
After the 3rd half-life 62.5 g of the radioactive material will be left.

Therefore after 60 minutes, 3 half lives would have occurred.

Therefore the half-life = 60 / 3 = 20 minutes when 250 grams of the original material would have remained radioactive.

Therefore the answer is A) About 250 gram of the material decayed in 20 minutes.

Answer:

Explanation:

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