The concept of evolution by way of natural selection is a central tenet in biology that has been tested in numerous ways by many scientists. Evolution by way of natural selection is most likely which type of concept?

A. an explanation of phenomena that can be accepted as true because it is supported by repeated observations and experimentation

B. a likelihood based on the chance that a particular event will or will not occur during an experiment

C. a testable explanation or answer to a scientific question based on prior knowledge or research

D. a statement of fact that is accepted as true because it has always been observed to be true through observations and experimentation

Answer:

142 is the answer whe you add 45 7 and 85

A female mouse is trying to decide if she will leave her natal nest to reproduce alone. She will produce 142 offspring.

Reproduction is the production of offspring. There are two main forms: sexual and asexual reproduction. In sexual reproduction, an organism combines the genetic information from each of its parents and is genetically unique.

In asexual reproduction, one parent copies itself to form a genetically identical offspring. Sea turtles are an example of an animal that reproduces sexually, a volvox (green algae) is an example of an organism that reproduces asexually, and a brittle star can reproduce in either way.

Reproduction is the process by which new organisms (offsprings) are produced from organisms of the same kind.

Therefore, A female mouse is trying to decide if she will leave her natal nest to reproduce alone. She will produce 142 offspring.

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The DNA within a cell is duplicated during both meiosis and mitosis. Two sister chromatids are produced for each chromosome as a result of the replication and continued joining of each DNA strand, or chromosome.

Mitosis is defined as the cell-division process in which the chromosomes multiply and are equally distributed between the two daughter cells. Prophase, Prometaphase, Metaphase, Anaphase, and Telophase are the five stages that make up mitosis. Meiosis is defined as a process by which a single cell undergoes two divisions, resulting in four cells with half the original genetic material.

Cell division occurs during meiosis as well as mitosis. The M-phase of the cell cycle is where both processes take place. The prophase, metaphase, anaphase, and telophase stages are typical for both cycles. DNA synthesis occurs during both cycles. A common goal of meiosis and mitosis is the division of the nucleus and its DNA into two daughter cells.

Thus, the DNA within a cell is duplicated during both meiosis and mitosis. Two sister chromatids are produced for each chromosome as a result of the replication and continued joining of each DNA strand, or chromosome.

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Answer:

c. Bile and lipase

Explanation: is correct

Answer:

C. Maintain a constant internal environment

Explanation:

Homeostasis is keeping an internal environment stable.

Answer:

Predators are an important part of a healthy ecosystem. Predators remove vulnerable prey, such as the old, injured, sick, or very young, leaving more food for the survival and success of healthy prey animals. Also, by controlling the size of prey populations, predators help slow down the spread of disease.

Answer:

It sounds like it would work but it wont. you need to lay down for the safest

Explanation:

Answer:

The second arrow (the middle one)

A group consisting of only the wood, american, cave, and desert

cockroaches being a monophyletic group is True.

This is the type of groups which consists of organisms which have a

common ancestor.

The organisms mentioned above are all types of cockroaches which

means they emanated from a common ancestor and makes it valid.

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Answer:

Endoplasmic Reticulum

Explanation:

I hope this helps!

Answer:

Endoplasmic Reticulum

Explanation:

have a nice day

Answer:

the haploid contains half a set of chromosomes

In order for blood vessels to maintain a steady pressure, there must be a prolonged presence of CALCIUM ions in the smooth muscle cell's cytosol. This ion initiates smooth muscle contraction.

Arterioles are blood vessels that have muscular walls consisting of one or two layers of smooth muscle cells.

Calcium (Ca2+) ions start the contraction of the smooth muscle cells by binding to calmodulin protein and thereby activating myosin.

In consequence, Ca2+ ions act as a secondary messenger that activates calmodulin, stimulating the phosphorylation of the myosin light chain and thus triggering muscle contraction.

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Answer:

oxygen te digo por qué ya Ise esa bro

This layered structure can be compared to that of a boiled egg. The crust, the outermost layer, is rigid and very thin compared with the other two. ... The mantle, which contains more iron, magnesium, and calcium than the crust, is hotter and denser because temperature and pressure inside the Earth increase with depth.

Robert Hooke was the first person to observe cells. He observed these cells in (a) a piece of cork.

I hope this helps!

Robert Hooke was the first person to observe cells. He observed these cells in a piece of cork. Thus, option A is correct.

Cell cycle is defined as cycle in which cell produces, grows and divides. The cell cycle has mainly three steps the first one is G1 phase in which the size of cell increases, S phase synthesis of DNA takes place and the third step is G2 phase in which cell ready to divide.

Cell is defined as the base of life as it is the structural as well as functional unit of life. Cell is made up of pre existing cells and the cell contain various cell organelles such as mitochondria, endoplasmic reticulum, ribosomes, golgi appratus, nucleus, and cytoplasm.

Basically, cell is of two type one in prokaryotic and another one is eukaryotic. The prokaryotic cell is known as pre mature cells as they do not contain cell organelles and eukaryotic cell are known as advanced and developed cells as they contain several cell organelles.

Therefore, Robert Hooke was the first person to observe cells. He observed these cells in a piece of cork. Thus, option A is correct.

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Answer: igneous, sedimentary, and metamorphic.

Explanation: Igneous rocks form when molten rock

Sedimentary rocks form  when particles settle out of water or air, or by precipitation of minerals from water

Metamorphic rocks form under extreme heat or pressure

Human activity such as the burning of fossil fuels has an effect on the overall increase of the Earth's temperature. Raising the Earth's temperature means that there is an increase of evaporation, melting of land and sea ice, and impacts on other processes of the water cycle that adversely affect the climate on Earth.

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In the general population where  1 in 300 individuals is a carrier for Tay-Sachs disease, while 1 in 30 individuals of Ashkenazi Jew descent are carriers. Tay-Sachs also affects 1 in 30 individuals with French-Canadian ancestry then in this condition , 1 in 2 will get the disease that is there is 50% possibility.

It is an autosomal recessive disorder.

The chances where the two two individuals having a child with Tay-Sachs if both individuals are not of Ashkenazi or Franch-Canadian descent is 25 % that is the child will not have any disease.

The chance where  the child inherits a mutated one  from one parent and becomes a carrier, but will not have  the condition themselves. 1 in 4 (25%) chance that means  the child inherits a faulty gene from both parents and develops Tay-Sachs disease.

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Answer:

C - All electrons in the atoms

Explanation:

It depends on the bonding for an explanation.

If one atom is a metal and one is a non metal it will be ionic. This is because one atom transfers its electron to the other atom giving them both a charge. They will then be bonded due to opposite forces of attraction.

If both atoms are non metals it will be covalent. Electrons pair together in the center of two atoms that have merged together and they share their electrons.

(Makes more sense with diagrams)

Hope this helps you!

The logical place to begin your investigation is TRANSCRIPTIONAL CONTROL. This field investigates the differential expression of genes.

Transcriptional control refers to the study of how genes are differentially expressed in the genome of cells.

In prokaryotic organisms (e.g., bacteria), genes are expressed in clusters known as operons.

An operon is a group of genes under the control of a single promoter sequence.

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The water lilies might adjust to requiring less water overall, even for drinking.

According to the idea of evolution, adaptation is the biological mechanism that allows organisms to adjust to new settings or to changes in the environment in which they are already living.

It is absolutely necessary for living things to be able to adapt in order to stay alive. Animals who are unable to adjust to the shifting conditions of their habitat ultimately perish. These alterations are the product of shifts in genetic make-up. The mutant genes are passed down from the animals that make it through the ordeal to the next generation.

Therefore, the water lilies might adjust to requiring less water overall, even for drinking.

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Answer:

C. crossing over chromosomes

Explanation:

Process of Meiosis. A man produces sperm and a woman produces eggs because their reproductive cells undergo meiosis.which cause Crossing Over.

Answer:

Ethanol CO2

Explanation:

Answer:

When a molecule moves down its concentration gradient is it participating in passive transport

Answer:

The answer is Carbon Dioxide/co2

Explanation:

For a clearer response, carbon dioxide is one of the substances needed for the process of photosynthesis. Oxygen is not essential because that molecule is what is being released. Glucose is the molecule being produced.

Answer:

D, Isosceles and right

Explanation:

you already know it's right bc of the little 90 degrees box so the only two right answers could be A and D but its not A bc all the sides aren't the same length so its D. Hope this helped! :)

Answer:

the talus bone

Explanation:

hope it helps<3

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Answer:

c be binge drinking c is the answer