All human impacts on the environment, such as the depletion of natural resources, are significantly worsened by __________. air and water pollution climate change human population growth agricultural practices

Answer:

The organ level of organization is when two or more tissues work together for a specific function. For example, the bladder consists of an inner lining of epithelial tissue, bound by various connective tissues to (smooth) muscle.

Explanation:

I hope this will help you

Answer:

HOPE IT HELPS

The correct description is as follows:

Nucleoside is a a compound consisting of a nitrogenous base (purine or pyrimidine) linked to a sugar e.g. adenosine.

Nucleotide is a compound consisting of a nucleoside linked to a phosphate group i.e. nucleoside + phosphate group = nucleotide

Therefore,

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After doing some research I got a close answer.

The table is correct except for the very first one being fossil A. I didn't get that one correct so don't use that one.

Answer:

Explanation:

Organism 1- Brachiopoda Fossil D

Organism 2- Mollusca, Gastropoda Fossil A 

Organism 3- Arthropoda, Trilobita Fossil C

Organism 4- Chordata, Actinopterygii none

Organism 5- Pteridophyta Fossil B

Organism 6- Nematoda none

Organism 7- Ascomycota none

Answer:

I think you are nepali yeah but I don't have your question ❓ answer

The DNA is found in the nucleus of the cell

Answer:

B.UAA is correct answer

The new hypothesis could be that there is another alternative factor that is negativey afecting dwarfs survivorship.

The previous hypothesis of high levels of phosphate killing mussels is not necessarily disproved.  But the death of mussels from both the control and the treatment groups might be related to one of the controlled variables that could be actually afecting them.      

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Probably different levels of phosphate are also affecting invididuals´ survivor rates. However, the fact that mussels from all the aquariums died suggests that there is something else going on that caused the death of all the individuals.    

The control group is used to identify any other factors influencing the results obtained in the study, apart from the modified variables of the treatment.  Individuals of the control group are selected from the same population as the treatment group. These two groups are identical in all aspects except for the independent variable, which changes in the treatment group but remains constant in the control group.

We know that mussels in this experiment were taken from the same population and grown under the same controlled conditions. Only the treatment group received phosphate, but all mussels died, not only the ones that receive phosphate. This result turns to be useful because it is indicating that there is another variable that is killing mussels. Phosphate might be a cause of death, but there is also something else. So the researchers should pay attention to the controlled variables, such as water quality, temperature, pH, food supply, light exposure, or others.  

These variables might be reflecting the real conditions under which mussels live. The results tell that one of these is related to individual death and could be a consequence of climate change or soil use, among other causes.    

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The genetic attributes of the organism are determined by the genotype. The cross of the heterozygous genes in Coral snakes results in offsprings with TT, Tt, and tt. Thus, option B is correct.

Genes are the functional and physical basis of the inheritance that passes from generation to offspring with various traits and attributes. The gene contains a recessive and a dominant allele.

Heterozygous genes are represented as Tt as it contains one dominant and one recessive allele. The cross between the two heterozygous (Tt) Coral snakes is attached to the image below.

From the cross, it can be seen that 75 % of the coral snakes have thin strips while the 25 % of the species have thick strips. The ratios are:

Genotype = 1 : 2 : 1

Phenotype = 1 : 3

Therefore, option b. the genotype(s) of the offspring will be TT, Tt, and tt.

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Answer:

The scarab or dung-beetle, and the spider to some ancient symbologists

The rate at which lactic acid is removed from the muscles can be increased by DRINKING WATER

HOW LACTIC ACID FORMS IN MUSCLES:

WAY TO HELP THE BODY GET RID OF LACTIC ACID IN MUSCLE CELLS:

The rate at which lactic acid is removed from the muscles can be increased by DRINKING WATER.

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Answer:

D. the basic unit of life

Explanation:

A cell is the basic fundamental unit of a living organism. There two types of organisms which are unicellular (single cell organism) and multicellular (many cells)

Answer:

b.Photosynthesis

Explanation:

as plants produce 02 in the presence of light

Answer:

Option(B):Photosynthesis

Explanation:

Cellular respiration, the process by which organisms combine oxygen with molecules,

in photosynthesis oxygen is produced

Answer:

All forms of pollution pose a serious threat to biodiversity, but in particular nutrient loading, primarily of nitrogen and phosphorus, which is a major and increasing cause of biodiversity loss and ecosystem dysfunction. ... In addition, nitrogen compounds can lead to eutrophication of ecosystems.

Answer:

These cells continue to mature and then exit the thymus, armed to inhibit the activation of self-reactive T cells. It has been estimated that the three steps of thymic selection eliminate 98% of thymocytes.

Answer:

When you have too little hemoglobin or not enough red blood cells, your body doesn't get enough oxygen so you feel tired or weak.

Explanation:

Answer:

Transparent-->Allows all light to pass through.

Translucent-->Allows only some/partial light to pass through.

Opaque-->Allows no light to pass through.

Answer:  You can consult:

Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal's genes are expressed, which ultimately affects the animal's phenotype.

Explanation:

I'm not sure but hope it helps.

Answer:

1 How food keeps us healthy. Food is needed for energy and nutrients to exist, it provides energy for work, and warmth for the body. Everybody also needs food to build, maintain and repair their body. It is also required for control of body processes and for protection against disease and infections.

Answer:

Any nutritious substance that people or animals eat or drink or that plants absorb in order to maintain life and growth.

Nutrition is the biochemical and physiological process by which an organism uses food to support its life.

Answer:

Bacteria are very important to humans, both for good and for bad, due to their chemical effects and the role they play in spreading disease. In their beneficial effect, some bact

Summary of four postulates of the theory of inheritance of acquired characteristics:

1. Living organisms or their component parts tend to increase in size.

2. Production of new organ is resulted from a new need.

3. Continued use of an organ makes it more developed, while disuse of an organ results in degeneration.

4. Acquired characters (or modifications) developed by individuals during their own lifetime are inheritable and accumulate over a period of time resulting a new species.

Explanation:

1. New needs:

Every living organism is found in some kind of environment. The changes in the environmental factors like light, temperature, medium, food, air etc. or migration of animal lead to the origin of new needs in the living organisms, especially animals. To fulfill these new needs, the living organisms have to exert special efforts like the changes in habits or behaviour.

2. Use and disuse of organs:

The new habits involve the greater use of certain organs to meet new needs, and the disuse or lesser use of certain other organs which are of no use in new conditions. This use and disuse of organs greatly affect the form, structure and functioning of the organs.

Continuous and extra use of organs make them more efficient while the continued disuse of some other organs lead to their degeneration and ultimate disappearance. So, Lamarckism is also called “Theory of use and disuse of organs.”

So the organism acquires certain new characters due to direct or indirect environmental effects during its own life span and are called Acquired or adaptive characters.

3. Inheritance of acquired characters:

Lamarck believed that acquired characters are inheritable and are transmitted to the offsprings so that these are born fit to face the changed environmental conditions and the chances of their survival are increased.

4. Speciation:

Lamarck believed that in every generation, new characters are acquired and transmitted to next generation, so that new characters accumulate generation after generation. After a number of generations, a new species is formed.

1. Cooking food properly. Undercooked foods may still contain microorganisms that are harmful.

2. washing raw foods properly. It can remove thermophilic microorganisms which can't be inhibited by temperature.

3. Hands should be clean. Handling affects the most.

Its important to learn about controlling microbes because

microbes are everywhere and many are really harmful for other living beings. so,

•To be safe from life-threatning diseases.

Answer:

I think a bar graph or a pie graph

Answer:

they are developed in the testicle within a system of tiny tubes called the seminiferous tubeles. AT birth these tubeless contain simple round cells. during puberty testosterone and other hormones cause these cells to transform into sperm cells.

Answer:

B. 6 days

Explanation:

I don't know a proper explanation, but overall it takes approx 6 days for the blastocyst to get implanted in the wall of the uterus.

Answer:

ok

Explanation:

Answer:

An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of natural communities and species. The biodiversity of flora, fauna and ecosystems that characterise an ecoregion tends to be distinct from that of other ecoregions. In theory, biodiversity or conservation ecoregions are relatively large areas of land or water where the probability of encountering different species and communities at any given point remains relatively constant, within an acceptable range of variation (largely undefined at this point).



A map of the Amazon rainforest ecoregions. The yellow line encloses the ecoregions per the World Wide Fund for Nature.



A map of North America's bioregions

Three caveats are appropriate for all bio-geographic mapping approaches. Firstly, no single bio-geographic framework is optimal for all taxa. Ecoregions reflect the best compromise for as many taxa as possible. Secondly, ecoregion boundaries rarely form abrupt edges; rather, ecotones and mosaic habitats bound them. Thirdly, most ecoregions contain habitats that differ from their assigned biome. Biogeographic provinces may originate due to various barriers, including physical (plate tectonics, topographic highs), climatic (latitudinal variation, seasonal range) and ocean chemical related (salinity, oxygen levels).

Answer:

B is correct

Explanation:

Answer:

Vagus nerve is the 10th cranial nerve. It is long start from brain and distributed over head, thorax and abdomen.

Explanation:

1.   In the salivary gland the secretory and vasodilator effect on afferent nerve is mediated mainly by parasympathetic reflex which is given by vagus nerve.

2.   Pyloric sphincter is the part present between the stomach and small intestine which regulate the flow of food particles from stomach to the intestine. Vagus nerve control the activities of pyloric sphincter. Vagus nerve help the pyloric sphincter to relax.

3.  Efferent nerves of vagus nerve help the gall bladder to contract. Vagus nerve is stimulating the gastric tract to contract. So the vagus nerve stimulation promotpromotprthe production of CCK hormone and it will lead to the contraction and secretion of hormones from the gallbladder. Those contractions will help the gallbladder to empty the hormones from gallbladder.

4.  The efferent nerves of vagus nerves act on the smooth muscles of duodenal papila. As above says it lead to the contraction of smooth muscles and also promote the production of CCK.