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elena-14-01-66 [18.8K]
3 years ago
9

Speciation often occurs when a habitat becomes more heterogeneous. in lake victoria different species of cichlids are found in d

ifferent areas of the lake. the best explanation for this speciation is that
Biology
1 answer:
melisa1 [442]3 years ago
3 0
Even for a long time, rapid speciation has fascinated the biologists. the study conducted in the recent years shows that the ecological opportunity and sex biased  color differences could actually increases the likelihood of speciation in african fishes. that is what evolution can actually do to our world. 
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Which of the following does not characterize the lungs of birds?
kompoz [17]

Answer:

C) They are compressed during inhalation.

Explanation:

Birds breathe through rigid lungs that are located in the animal's thoracic region. The trachea of birds divides into bronchi that branch inside the lungs into very thin tubes called parabronchials or parabroncholes, which are irrigated by blood capillaries that allow gas exchange.

In birds there are no pulmonary alveoli (as in mammals), but air capillaries that depart from the parabroncholes. Oxygen gas passes from these capillaries to the blood capillaries, thus causing gas exchange.

In the lower portion of the bird's trachea, before branching the bronchi, we can find the syringe, a bag-like structure that has vocal cords responsible for the birds' scream and song. Most of the time, the sound emitted by birds serves to attract the mate, mark territory and prevent birds of the same species against some predator or other danger.

8 0
3 years ago
If a mutation occurs in a gene, the structure of a _____________ within the organism may be changed.
Mama L [17]
<h2>Answer</h2>

If a mutation occurs in a gene, the structure of a <u>Protein</u> within the organism may be changed.

<h3>#CarryOnLearning</h3>

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6 0
2 years ago
Como estan compuestos los sistemas de coordinacion, control e integracion
Nonamiya [84]

This book describes how control of distributed systems can be advanced by an integration of control, communication, and computation. The global control objectives are met by judicious combinations of local and nonlocal observations taking advantage of various forms of communication exchanges between distributed controllers. Control architectures are considered according to increasing degrees of cooperation of local controllers: fully distributed or decentralized control, control with communication between controllers, coordination control, and multilevel control. The book covers also topics bridging computer science, communication, and control, like communication for control of networks, average consensus for distributed systems, and modeling and verification of discrete and of hybrid systems.

Examples and case studies are introduced in the first part of the text and developed throughout the book. They include:

<span>control of underwater vehicles,automated-guided vehicles on a container terminal,control of a printer as a complex machine, andcontrol of an electric power system.</span>

The book is composed of short essays each within eight pages, including suggestions and references for further research and reading.

By reading the essays collected in the book Coordination Control of Distributed Systems, graduate students and post-docs will be introduced to the research frontiers in control of decentralized and of distributed systems. Control theorists and practitioners with backgrounds in electrical, mechanical, civil and aerospace engineering will find in the book information and inspiration to transfer to their fields of interest the state-of-art in coordination control.

6 0
3 years ago
Over the last few decades, scientists have noticed that lobsters, which obtain heat from the environment rather than generating
Setler79 [48]

Answer:

Lobsters are adapting to cooler temperatures.

Explanation:

Adaptation may be defined as the phenomena that involves the physical, physiological and chemical changes in the organisms that helps to adapt themselves in their environmental condition.

The adaptation may bring genetic changes in the next generation as well. The lobsters movement per year demonstrates that they are trying to adapt in their environment. The cooler temperatures is favorable for the growth and adaptation of Lobsters.

Thus, the answer is Lobsters are adapting to cooler temperatures.

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3 years ago
How would a population decrease in primary consumers affect the ecosystem?
kicyunya [14]
A population decrease in primary producers would affect the ecosystem negatively because everyone who ate the primary consumers would have a lack of food.
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