How is the process of natural selection involved in evolution?

Answers

Answer 1

Answer: Natural selection means that the organisms better adapted to their environment, that is, they have developed the right characteristics/skills/response to the external ambient, have higher chance to survive, making the next generations genetically inherit such acquired surviving characteristics.
These generations will thus have a higher chance of survival, making these species being "naturally selected" as survivors, while those who haven't or are slower in this process, have a higher risk of elimination.

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Loss of habitat has decreased the population and number of alleles of Canadian lynx. A few survivors migrated to other forests and multiplied, but there is less genetic variation in the offspring. Which statement is true about this event?

Answers

Reproductive isolation prevents variations from spreading throughout the entire population. Since genetic variations basically occur randomly, the chances that the same variations will occur in both reproductively separated subpopulations are vanishingly slim. Thus, genetic divergence between both subpopulations will occur, and this may eventually lead to speciation. Isolation stops populations of the same species from interbreeding. This results in separate breeding among populations and genetic differences become more pronounced with each generation.

One major difference between prokaryotic and eukaryotic cells is that prokaryotic cells is what?

Answers

The prokaryotic cell does not have a nucleus but instead they have a chromosome.

Answer:

Prokaryotes are uni-cellular

Explanation:

Meaning they do not have more than one cell, for example; bacteria are prokaryotes.

Environmental policy addresses all of the following issues except _______.a.air pollution

b.water pollution

c.natural disasters

d.overfishing

Answers

Environmental policy addresses all of the following issues except "natural disasters option C is correct.

Natural disasters, such as earthquakes, hurricanes, tornadoes, and floods, are typically considered as separate issues dealt with by emergency response and disaster management agencies.Here is a brief overview of how environmental policy relates to the other issues you mentioned:

a. Air pollution Environmental policies often set standards and regulations to control and reduce air pollution. This includes regulating emissions from industrial sources and vehicles, as well as promoting cleaner energy sources.

b. Water pollution: Environmental policies address the quality of water bodies, regulating pollutant discharges and protecting water resources. This includes measures to prevent contamination from industrial, agricultural, and municipal sources.

d. Overfishing: Environmental policies, such as fisheries management and conservation measures, aim to address overfishing and protect aquatic ecosystems. These policies can include catch limits, fishing season regulations, and marine protected areas.

In addition to these, environmental policy can also encompass a broad range of issues, such as habitat conservation, biodiversity protection, waste management, and climate change mitigation. The overall goal of environmental policy is to balance economic and societal needs with environmental conservation and sustainability, ensuring a healthy and resilient planet for future generations.

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Answer: Option C

Explanation:

The environmental policy addresses all the issues related to the environment which occurs due to human interventions into the environment.

The environmental issues like air pollution, over fishing, air pollution are caused due to human interventions.

The natural disaster is caused by natural causes not due to human interventions. So, environmental policy does not addresses natural disasters.

What biome covers mostly Canada?

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it would be mostly covered with taiga.

The biome that mostly covers Canada is taiga

If an enzyme is absent during polypeptide production, a mutation can occur. a. True
b. False

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True. Protein enzymes are necessary to break polypeptide bonds. If they are absent within the cell mutations and abnormal cell growth would occur. Enzymes play a crucial role in balancing the cell's nutrients and overall processing of these nutrients that are available within and around the cell.

Compounds _____.A. have different properties from the elements they are made from
B. have the same properties as the elements they are made from
C. can only exist as solids or liquids
D. are the same as molecules

Answers

A. Compounds have entirely different chemical properties from the elements that make them up.

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Yeast and bacterial cells can be grown so that they divide continuously using a chemostat. Chemostats are tanks filled with a liquid medium that contains all the sugars and nutrients needed for microbial growth. New medium is added to the tank via a constant drip, while used medium and cells exit the tank via an effluent tube.a. List the state variables that will be relevant to this model, and the state space in which they live. b. List all the parameters you think might be relevant to this model. Describe in words the meaning of each parameter and any restrictions on their values. c. Justify whether this should be a discrete time model or continuous time model.