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Natural selection is the reason behind evolution.

The term natural selection refers to the fact that organisms that possess certain favorable characteristics live long enough to reproduce and pass on these favorable characteristics to their offspring.

In the opinion of Charles Darwin, natural selection is the reason behind evolution and he explained this in his book titled ;"On the origin of species".

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Answer:

1) NH₃ and HCl

2) synthesis

3) 2

Explanation:

1) the reactants are always on the left side and the products are always on the right side

2) In a synthesis reaction A + B ➜ AB

3) The full balanced equation: 2H₂ + O₂ ➜2H₂O

The primary distinction between taxonomy and systematics is that taxonomy is concerned with the classification and naming of creatures, whereas systematics is concerned with the determination of organisms' evolutionary relationships. This means that systematics determines whether or not different organisms share a common ancestor.

Mangroves swamps or forests are productive wetlands and grow in saline and humid climates.  They play an important role in fisheries, coastal protection and wildlife habitat.

The mangroves are located in the subtropical and the tropical region where the climate is high in humidity and have saline and waterlogged forests.

The mangroves interact with the ecosystem through various means and help other aquatic organism for shelter and reproductive sites.

They help the ecosystem in maintaining water quality and help in coastal protection along with aiding the wildlife habitat. The fishes reside in the roots and the forests structures and lay their eggs.

Therefore, option d. all of the above is correct.

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Answer:

All of the above

Explanation:

Got it right on edge2020

Answer:

Unlike aerobic respiration, anaerobic respiration does not need oxygen. It is the release of a relatively small amount of energy in cells by the breakdown of food substances in the absence of oxygen.

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Explanation:

Aerobic respiration takes place in presence of oxygen; whereas anaerobic respiration takes place in absence of oxygen. Carbon dioxide and water are the end products of aerobic respiration, while alcohol is the end product of anaerobic respiration.

Answer:

In this case, the two backward forces (air resistance and friction) perfectly balance the applied force of the wheels on the road in the opposite direction. Now unbalanced, those forces acting backward on the car slow it down, which we also know as negative acceleration

Explanation:

Ecosystem services link rural lands with urban lands because people living in urban lands need resources that only come from rural areas such as crops, clean drinking water, fertile soil, and trees. ... Humans use forest land for harvesting wood, wildlife, fish, nuts, and other resources.

The advantages that come from ecosystems to people are called ecosystem services. Clean air and water, food production, and recreational activities are just a few of these advantages.

An ecosystem is a region where a bubble of life is created by plants, animals, and other organisms interacting with the weather, environment, and other factors.

First, rural lands offer crucial ecosystem services that are necessary for metropolitan regions to function.

Second, urban regions can provide rural areas with crucial ecosystem services.

Urban areas, for instance, might offer markets for agricultural products as well as financial and technological support for sustainable agricultural methods.

Third, the viability of both urban and rural communities depends on their connections. The movements of materials, energy, and information that unite urban and rural areas create a connection between them.

Finally, ecosystem services act as a vital link between rural and urban areas.

Thus, this way, ecosystem services link rural lands with urban lands.

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Answer: the answer is northeast

Explanation:

Answer:

Northeast

Explanation:

To find the steepest part of a topographic map, simply look at the contour lines and if they are close together, they are steep, but if they are distanced fairly they are at a gentler slope range. Also if they are very far apart the land would be flat, which is both good for farming and housing. Since there was no topograpic model of a land structure given in this answer, I chose to go with assumptions of most land structures such as mountains or volcanoes which have commonly had the steepest part be in the Northeast, as this fact can be support by geological evidence and the movement of the plate tetonic and the convergent boundaries that border most of the mountains on the planet earth.

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Adaptation is the process through which organisms with advantageous structures or behaviors are naturally selected over organisms that do not possess these traits.

A trait, as related to genetics, is a specific characteristic of an individual. Traits can be determined by genes, environmental factors or by a combination of both. Traits can be qualitative (such as eye color) or quantitative (such as height or blood pressure).

Biological traits describe species' physiology, morphology, life history, and behavior, capturing both inter-specific interactions and the connections between species and their environment.

All living things have certain traits in common: Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt. Living things will exhibit all of these traits.

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Answer:

c is the answer

hope it helps you

We can confirm that a segment of DNA that codes for RNA and can vary in length from a few hundred to as many as two million base pairs in length best defines a gene.

To expand on the definition given, we can say that a gene is, as mentioned, a series of base pairs known as nucleotides that will code for RNA. The RNA in question is messenger RNA that will later become a protein. Through this process, genes code for every aspect of an organism and will determine its morphology and all other biological aspects.

Therefore, we can confirm that a segment of DNA that codes for RNA and can vary in length from a few hundred to as many as two million base pairs in length best defines a gene.

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Answer:

c is the answer

hope it helps you

Answer:

Answer C

Explanation:

I know it best

Answer:

v

Explanation:

Part A: Bb would be their genotype.

Part B: The offspring would be born with black hair if they were to have any  of the dominant alleles. (BB or Bb) Their fur would be colored white if their genotype was "bb". The uppercase "B" represents the dominant allele and the "b" represents the recessive allele. Since there's "BB" and "bb" genotypes breeding, the only outcome for their offspring would be the "Bb" genotype.

Given what we know, we can confirm that the basic idea resulting from these studies is that a creature's metabolism is related to its lifespan.

From the studies done and the comparison of the lifespan of certain species in relation to their metabolic rates, scientists have noticed that metabolism and lifespan are inversely proportional. The slower the metabolism of an organism, the longer that organism can live.

Therefore, we can confirm that the basic idea is that a creature's metabolism is inversely proportional to its lifespan, meaning that the faster the metabolism, the shorter the lifespan of the creature in question.

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Answer:

Common characteristics of birds and fishes are:

They can have Respiration.

They can move from one place to another.

The insertion of pesticide resistance genes in certain transgenic products causes pests and weeds (natural enemies) to develop the same resistance, becoming "super-pests" and "super-weeds".

GMOs are foods that are genetically modified by altering the genetic code. That is, when genes from another organism are inserted into organisms. This procedure can even be done between organisms of different species (insertion of a gene from a virus into a plant, for example) and carried out with

With this information, we can conclude that with a new corn transgenic, an alteration can be made in the cultivation environment.

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Answer:

C. Larger compounds break down into two or more smaller compounds.

Explanation:

During a decomposition reaction, the bonds between the atoms break down in the starting substance. The atoms then rearrange to form new bonds, resulting in new substances with properties different from the starting material.

Answer:

➢ A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. ... Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water.

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Answer:

Fungi are heterotrophic and they don't use photosynthesis.

Explanation:

Answer:

A. pesticides and chemicals runoff into waterways

Explanation:

Its a fact and so.

In B. pesticides can cause air pollution by releasing harmful gas but does not affect water in anyway.

C. same as B. it does not cause water pollution but more likely to cause air pollution.

In A. when excess pesticides run away because of rain water falling on the soil and reaches to river to cause water pollution.

Answer:

Biology can be troubling, and only comes natural to certain people. It is ok not to understand, just follow along in the textbook if you have one, and listen to the teacher. My teacher talks a little complicated but once in a while you will pick up something interesting. If you really need additional help, there are some Biointeractive videos around the internet, that really helped me to understand what I needed to know.

Explanation:

The definition of Biology in real terms is basically the study of living organisms, that covers a wide variety of subjects related to the organism being studied, such as the Mitosis reproduction, genetics, and how life began on Earth. I hope this helps.

Answer:

The basal lamina is secreted by the epithelial cells.

Explanation:

Collagen fibers that run from the periosteum's outer layer to the bone matrix firmly bind the periosteum to the bone tissue. These fibers are called Sharpey's fibers.

46

In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46

Answer:

Training records are also keep confidential and must be maintained for at least 3 years following the training.