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Serggg [28]
3 years ago
14

Why do we use arrows when creating a food web? What do they represent?

Biology
1 answer:
dmitriy555 [2]3 years ago
5 0

The arrows usually point to the organisms that are doing the eating.

Explanation:

For that reason, we can say that the arrows represent the flow or transfer of energy in an ecosystem. It also specifies the direction of the flow of energy.

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Which of the following correctly compares the changes that take place in an ecosystem during primary succession and secondary su
n200080 [17]

Answer: B). Primary succession takes place over a long period of time on a newly formed land, while secondary succession occurs quickly in areas that have disrupted by a natural disaster.

Explanation:

A succession is a gradual change that occur within the biotic community due to change in the non-living environmental factors with respect to time until the community establish stability.

A primary succession occurs over a land which was not previously occupied by any living species. The land can be primitive, environmental factors like soil, air and others are not supportive initially. Thus, it takes long time to establish a biotic community.

A secondary succession occurs over a region which was previously inhabitated by colonies of species but disturbed due to natural calamity or human induced disaster. Some of the precursors of life can be found in such region like seeds, spores, roots and others which support new growth and the environmental factors are suitable to support re-establishment of living species. Hence, secondary succession takes place quickly as compared to primary succession.

3 0
3 years ago
Read 2 more answers
I need help on a 250 word essay about facts about like scientific knowledge.​
Maslowich

Scientific knowledge refers to a generalized body of laws and theories to explain a phenomenon or behavior of interest that are acquired using the scientific method. Laws are observed patterns of phenomena or behaviors, while theories are systematic explanations of the underlying phenomenon or behavior.Scientific Knowledge is Based on Empirical Evidence Identifies accurate examples of data used for evidence. For example: Much of the data about the seafloor is collected without direct observations. ... For example: the sonar mapping activity graph can serve as a model of the seafloor.Scientific knowledge allows us to develop new technologies, solve practical problems, and make informed decisions — both individually and collectively. Because its products are so useful, the process of science is intertwined with those applications: New scientific knowledge may lead to new applications.Scientific knowledge refers to a generalized body of laws and theories to explain a phenomenon or behavior of interest that are acquired using the scientific method. Laws are observed patterns of phenomena or behaviors, while theories are systematic explanations of the underlying phenomenon.It is derived from perception, learning, and discovery. Scientific knowledge, in particular, is organized in a systematic way and is testable and verifiable. It is used to provide explanations of the occurrence of events.Scientific knowledge is fully objective, verified by independent scientific research. The course of the conducted research, applied research methods and their nature and research issues should be determined objectively by scientists, ie independently of other entities and institutions.

8 0
3 years ago
Plz help me really wask i am beging for u and thank u ! The conception phase of the product life cycle could be described as dea
topjm [15]

Answer:

B. Manufacturing

Explanation:

because it is

6 0
3 years ago
Dioxin, produced as a by-product of various industrial chemical processes, is suspected of contributing to the development of ca
wel

Answer:

Transcription factors.

Explanation:

Transcription and translation are the two important process involved in the gene expression of a particular protein. Transcription is the formation of RNA and translation is the formation of proteins.

Transcription requires different enzymes and transcription factors. Transcription factors are important factors that regulates the expression of transcription and may increase or decrease the process of transcription. Here, the protein that binds with dioxin acts as the transcription factors as it regulates the gene expression.

Thus, the correct answer is option (3).

8 0
3 years ago
Which bacteria would you not use a Gram stain on? Select all that apply.
OlgaM077 [116]

b, f, h.

The bacteria that you would not use a Gram stain on are Escherichia coli, Pseudomonas spp. and Clostridium spp, and Neisseria meningitidis.

<h3>What are Gram stain negative bacteria?</h3>

Gram-negative bacteria have cell walls with thin layers of peptidoglycan and high lipid content.

This causes them to appear red to pink under a Gram stain.

<h3>Examples of Gram - negative bacteria</h3>

Gram-negative bacteria include:

  • Pseudomonas,
  • Klebsiella,
  • Proteus,
  • Salmonella,
  • Providencia,
  • Escherichia,
  • Morganella,
  • Aeromonas
  • Citrobacter
  • Neisseria meningitides

Thus, the bacteria that you would not use a Gram stain on are Escherichia coli, Pseudomonas spp. and Clostridium spp, and Neisseria meningitidis.

Learn more about gram negative bacteria here: brainly.com/question/1194544

#SPJ1

8 0
2 years ago
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