BIOLOGY HIGH SCHOOL

If a substance can be separated by physical means and it is not the same throughout, what is it? a heterogeneous mixture a homogeneous solution a compound an element get it right upvote time

Answers

Answer 1
Answer:

answer:

a heterogeneous mixture

explanation:

A heterogeneous mixture is commonly any mixture that is not uniform in combination - it's a non-uniform mixture of smaller fundamental particles. Using different means, the particles in the mixture can be separated from one another. In a heterogeneous mixture, the elements do not mix completely, and the individual items that form the mixture can be identified. Heterogeneous mixtures can typically be separated back into their original components by chemical or physical means.
Answer 2
Answer:

Answer:

mixture

Explanation:

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Some organisms have favorable traits that are well-suited to the environment at hand. Organisms with this advantage are more likely to thrive, reproduce, and pass their traits to future generations than organisms without favorable traits. * This process is known as* A. genetic engineering.* B. natural selection.* C. artificial selection.* D. selective breeding.
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When a natural events such as hurricanes or earthquake separate a population this is called
A ratio of 3:1 in the phenotype of an organism occurs when(A) the alleles are incompletely dominant. (B) only recessive traits are involved. (C) only dominant traits are involved. (D) alleles segregate during meiosis. (E) crossing over has occurred in Anaphase II.

in the alternation of generations life cycle two gametes fuse together to form a a. gametophyte plant. b. meiotic division. c. zygote. d. sporophyte plant.

Answers

Answer:

C. Zygote

Explanation:

Alternation of a generation refers to a type of life cycle wherein organisms spend part of their life span in the gametophytic stage and part in a sporophytic stage.  

The gametophytic stage is the one that bears gametes producing organs and produce gametes. Male and female gametes fuse together to form a zygote. The zygote develops into sporophyte by repeated cell divisions.

The sporophyte stage of the life cycle is the one that is responsible for the formation of spores. Spores germinate to give rise to the gametophyte stage and the cycle repeats itself.

For example, flowering plants have a dominant sporophytic phase. The haploid male and female gametes are formed in microsporangia and megasporangia respectively.

The male gametes of flowering plants are carried by pollen to the female gamete, the egg cell. This is followed by the fusion of male and female gamete to form a diploid zygote. The zygote divides mitotically and forms an embryo.
the corect answer C a zygote

Why is burning coal a major source of pollution?

Answers

It releases carbon dioxide into the air

Answer: DON'T COPY/PASTE

Coal is a chemically complex fuel. Whenever it is burned, gases are given off and particles of ash, called "fly ash," are released. The sulfur in coal combines with oxygen to form sulfur dioxide, which can be a major source of air pollution if emitted in large enough quantities.

http://www.coaleducation.org/lessons/twe/envi.pdf

What term includes all the biotic and abiotic elements in an area? A)ecosystem
b. population
c. biome
d. organ

Answers

Answer:

The correct answer would be A) ecosystem.

Ecosystem refers to the community made up of all the living organisms (biotic component), their physical environment and all their interactions in a given space.

The biotic and abiotic components of the ecosystem are linked with the help of energy flows and nutrient cycles.
A)ecosystem - this is true! an ecosystem includes both living and non-living objects in a system!
b. population - this is only biotic: a population is a group of organisms, and organisms are biotic
c. biome - this is also only biotic: it's a large community of plants and animals over a large area
d. organ- this would be only biotic (parts of living organism)

Two scientists perform a similar experiment, but each produces a different result. What could this possibly indicate? I. The scientists used different methods to collect the data. II. The scientists used different methods to interpret data. III. The results of both experiments are trustworthy. IV. One or both scientists collected data with faulty equipment.

Answers

Answer:

I, II, and IV only

Explanation:

The sigmoidal relationship between prey density and per capita predation rate in a Type III functional response can be explained by all of the following factors, except(A) Predator density.(B) Predator preference of prey switches.(C) Prey access to refuge.(D) Recognition of prey by predator.

Answers

Answer:

predatory density.

Explanation:

According to my research on sigmoidal relationships, I can say that based on the information provided within the question this is explained by all except for predatory density. This is basically defined as the amount there are of prey hence density.

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How many bases are in the DNA molecule of a typical human chromosome? A) Two B) Four C) Thousands D) Millions

Answers

The answer to your question is D) Millions
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