How do geologists explain the occurrence of similar fossils of land organisms on different land masses separated by large bodies of water .

Help please

Answer:

Stem cells have the ability to build every tissue in the human body, hence have great potential for future therapeutic uses in tissue regeneration and repair. In order for cells to fall under the definition of “stem cells,” they must display two essential characteristics.

Explanation:

Answer:

Chloroplasts

Explanation:

they make sugar during photosynthesis.

Answer:

Xylem cells

Explanation:

Answer: Xylem

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Answer: the last one 1-0.125 doesn't equal 5/8, 5/8=0.0625 I believe the last one is the correct answer

Explanation:

Explanation:

hers done..........

......

Answer:

The circulatory system also removes carbon dioxide and waste from cells

Answer: B

Explanation: Transport of pebbles in a stream causes them to collide and rub against one another and the stream bed, and the resulting abrasion produces the familiar smooth and rounded shape of river rocks.

Answer:

humans are adapted to a wide range of environments, and genetic variation leads to phenotypic variation

Explanation:

It has been shown that the average genetic variation between human individuals is about 0.1% (i.e., one base pair out of every 1,0000 are different between any two individuals). This value seems low, but it is huge when we consider that the current estimate for the world population is 7,800,000,000 people. The phenotype is the result of the interaction between genotype and environment. Genetic variation is the raw material that enables some individuals to adapt to different environments. As species, humans have a high genetic diversity in order to develop a wide range of phenotypes well adapted to different environmental conditions.

Answer: The full explanation below.

Explanation: The advantage of Relative dating is it can tell if a rock is older or younger that a certain object where the age is also not certain making it easier to tell when the other object was from, however it dose not give an exact age of the rock. Absolute dating is different because it gives you the exact age of the rock, but does not aid in find the age of any artifacts that can be found around it. Hope this helps! :D

Absolute dating establishes the exact age of a historical relic, whereas relative dating determines the order of age of several samples. Absolute dating is therefore a quantitative measurement, whereas relative dating is a qualitative measurement.

To date ancient events, geologists commonly use radiometric dating methods, which are based on the natural radioactive decay of certain elements such as potassium and carbon.

Relative dating is used to order geological events and the rocks they leave behind. The limitation of relative dating of fossils is that it does not provide the absolute age of the preserved fossils.

Absolute dating methods take physical properties of an object and use them to calculate its age.

Despite the fact that scientists exercise extreme caution when dating objects, recent studies show that they still make mistakes.

Because of incorrect setup, the dates used with this method are incorrect. The dates may not be consistent over long periods of time.

Thus, above mentioned are some advantages as well as disadvantages of two types of radiometric dating.

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Answer:

The correct option is A.

1, 11 and 111 only.

Explanation:

This is because mitosis is a type of cell division in which a single parent cell divide into daughter cells that are genetically identical to the parent cell or have the same number of chromosomes with the parent. This type of cell division occur during growth in the body and when there is need for cell replacement from old or damaged cells. It produce sex cell which are use for sexual reproduction.

Answer:

The correct answer is C. 1 and 11 only

Explanation:

Answer:

silviculture should follow natural processes.

foresters should plan for the long-term and science should guide them.

forests have intrinsic value, humans need to extract forest products, and social and economic concerns are important.

Explanation:

took the test and notes.

Answer:

how do u post question lol

Answer:

You need just one copy to be dominant. Let's assume A is dominant so A & B

Answer:

I think its tRNA

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Answer:

Explanation:

Afforestation simply refers to a campaign in favor of tree planting, against tree cutting in reserves or vegetation and the overall protection of the Forest reserve. Afforestation in the direct opposite of deforestation which is act of cutting down and destruction of forest trees. Trees are important part of our natural environment which plays economic, biological and chemical roles in the lives of the masses. Most notably, forest trees acts as carbon sink which in turn reduces depletion of the ozone layer. Even though their are economic derivatives in the cutting selling of forest planks for various purposes, tree planting culture must be legislated in other to avoid excessive use of forest reserves.

Answer:

It is true

Explanation:

pls mark brainliest

Answer:

True

Explanation:

Autotrophs are producers because they can make their own food. Heterotrophs are known as consumers because they consume producers or other consumers.

Answer:

GGCCATAGGTCCCTTTAGCG

Explanation:

I got a 100%

Answer:4

Explanation:

For every bond created, four water molecules must be removed. Bonds break and join when molecules are formed.

Different types of chemical bonds are present between different types of compounds, these bonds store energy and when the chemical reaction happens the reactance reacts they broke the bonds from the energy and create new compounds.

It takes a lot of heat to raise the temperature of liquid water, and an exceptional amount of heat to evaporate a given volume of water because hydrogen bonds need to be broken for the molecules to escape as gases.

Hydrogen bonds release water when they join or break. These bonds are formed in water and other compounds like DNA bases.

Therefore, four water molecules must be eliminated for every new link that is formed. When molecules are produced, bonds are broken and joined.

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Answer:

DNA is double stranded, and the strands are antiparallel because they run in opposite directions.

Explanation:

Each DNA molecule has two strands of nucleotides. Each strand has sugar phosphate backbone, but the orientation of the sugar molecule is opposite in the two strands.

Answer:

Living things are highly organized and structured, following a hierarchy that can be examined on a scale from small to large. The atom is the smallest and most fundamental unit of matter. It consists of a nucleus surrounded by electrons. Atoms form molecules. A molecule is a chemical structure consisting of at least two atoms held together by one or more chemical bonds. Many molecules that are biologically important are macromolecules, large molecules that are typically formed by polymerization (a polymer is a large molecule that is made by combining smaller units called monomers, which are simpler than macromolecules). An example of a macromolecule is deoxyribonucleic acid (DNA) (Figure 1), which contains the instructions for the structure and functioning of all living organisms.



Figure 1. All molecules, including this DNA molecule, are composed of atoms. (credit: “brian0918″/Wikimedia Commons)

Some cells contain aggregates of macromolecules surrounded by membranes; these are called organelles. Organelles are small structures that exist within cells. Examples of organelles include mitochondria and chloroplasts, which carry out indispensable functions: mitochondria produce energy to power the cell, while chloroplasts enable green plants to utilize the energy in sunlight to make sugars. All living things are made of cells; the cell itself is the smallest fundamental unit of structure and function in living organisms. (This requirement is why viruses are not considered living: they are not made of cells. To make new viruses, they have to invade and hijack the reproductive mechanism of a living cell; only then can they obtain the materials they need to reproduce.) Some organisms consist of a single cell and others are multicellular. Cells are classified as prokaryotic or eukaryotic. Prokaryotes are single-celled or colonial organisms that do not have membrane-bound nuclei or organelles; in contrast, the cells of eukaryotes do have membrane-bound organelles and a membrane-bound nucleus.

In larger organisms, cells combine to make tissues, which are groups of similar cells carrying out similar or related functions. Organs are collections of tissues grouped together performing a common function. Organs are present not only in animals but also in plants. An organ system is a higher level of organization that consists of functionally related organs. Mammals have many organ systems. For instance, the circulatory system transports blood through the body and to and from the lungs; it includes organs such as the heart and blood vessels. Organisms are individual living entities. For example, each tree in a forest is an organism. Single-celled prokaryotes and single-celled eukaryotes are also considered organisms and are typically referred to as microorganisms.

All the individuals of a species living within a specific area are collectively called a population. For example, a forest may include many pine trees. All of these pine trees represent the population of pine trees in this forest. Different populations may live in the same specific area. For example, the forest with the pine trees includes populations of flowering plants and also insects and microbial populations. A community is the sum of populations inhabiting a particular area. For instance, all of the trees, flowers, insects, and other populations in a forest form the forest’s community. Keep in mind that the community level only consists of living organisms. The forest itself is an ecosystem; this is the first level that contains non-living aspects of a given area that impact the living things in that environment. An ecosystem consists of all the living things in a particular area together with the abiotic, non-living parts of that environment such as nitrogen in the soil or rain water. At the highest level of organization (Figure 2), the biosphere is the collection of all ecosystems, and it represents the zones of life on earth. It includes land, water, and even the atmosphere to a certain extent.

Answer:

A producer

Explanation:

The trophic level which has the most amount of energy is the producer. Thus, the correct option is A.

The trophic level of an organism is the position which it occupies in a food web. A food chain is a succession of organisms which eat other small and simple organisms and may, in turn, be eaten up themselves or by higher organisms. The trophic level of an organism is the number of steps which it is from the start of the chain.

The food chain follows 10% energy law, where 10% of the energy is transferred to the next trophic level, this decrease with every trophic level limits the number of trophic levels in a food chain. The maximum energy is present in producers which perform photosynthesis.

Therefore, the correct option is A.

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Answer:

well if the forest is no longer there the life within the forest will no longer be able to survive so that eliminates a group of living things in the area causing less diversity

Answer:

Synthesis of organic molecules

Explanation:

AnsweR: C

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Answer:

There are several small products of photosynthesis but the main product is glucose . Another main product is oxygen as well.

Answer:

In a V-shaped valley

Explanation: Because the v-shaped valley has more of a slope than the others.

Answer:

Different nucleotides can be created by altering the codons.

-Mutations

-Chemicals

-Insertion/Deletion

-Replication errors

-Genetics

Answer:

No tetrads are formed in mitosis.

Explanation: Tetrads are formed in meiosis and lead to genetic recombination. After the formation of tetrads crossing over occurs. In humans, 23 tetrads are formed in meiosis.