Which of the atoms below has the lowest atomic mass?​

Answer:

Darwin defined evolution as "descent with modification," the idea that species change over time, give rise to new species, and share a common ancestor.

Answer:

The symbiotic relationship between the crocodile and the plover bird is exemplary of two organisms working together. The plover bird flies inside the crocodile's mouth, which may seem dangerous for the bird and food for the crocodile

Explanation:

Answer:

Okay, this one is pretty in-depth, but it's an example none the less.

Explanation:

Take bees, plants, deer, and wolves. All of which are technically species. One is a producer, and three of them are consumers. Bees pollinate plants. The bees now have their food, and the plants are reproducing. The plants are food for the deer. The deer are eating, surviving, and reproducing. The deer are then eaten by the wolves. There ya go. Hope this helps.

Answer:

Honey, we need to read the passage in order to help you answer the questions :)

Explanation:

Answer:

Rivers don't run straight because water flows in the least path of resistance

Explanation:

It is small disturbances in topography that set off reactions that alter the path of a river Any kind of weakening of the sediment on one side of a river due to animal activity it could also be because of  soil erosion, or human activity can draw the motion of the water towards that side.

Answer:

The correct answer is - Control microcosms did not contain living moss, while experimental microcosms did contain living moss.

Explanation:

The difference between the control microcosms and experiment Microcosms is, the presence of the living moss in the experimental group whereas the control group does not contain living moss.

The independent variable in this research setting is the presence or absence of the living moss and for the control group, the mosses are filtered out and only added the water.

Answer:

Crossing over results in Genetic Recombination.

Explanation:

Answer:

D

Explanation:

limestone isn't a primary mineral

Answer:

D?? I hope this helps.

Explanation:

Answer:

Because trees don't produce food during the winter, they don't have the energy that it takes to maintain their leaves. ... This chemical triggers the tree to shed its leaves and to halt all growth to save energy.

Explanation:

Answer:

Alfred wegener was the one that provided the evidence for plate tectonics

Answer:

Alfred Wegener

Explanation:

German meteorologist Alfred Wegener is often credited as the first to develop a theory of plate tectonics, in the form of continental drift.

Prokaryotes showed up on Earth long before any long reptiles and Small plants statement is incorrect about the Geologic Time Scale

Prokaryotic cells are microorganisms include Bacteria and Archaea while other photosynthetic prokaryotes are cyanobacteria which do photosynthesis.

A prokaryotic cell is a single membrane bound cell where all the metabolic reactions occur within the cytoplasm,  free-living or parasites in nature, they lack nuclear membrane.

In prokaryotes the organelles like  Mitochondria, Golgi bodies, chloroplast, and lysosomes are absent, whereas genetic material is present as a single chromosome;

The prokaryotic cell divide  by binary fission where as the sexual mode of reproduction involves conjugation.

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Answer:

yes I m there

Explanation:

what happened

Answer:

The XY chromosomes refer to the gender chromosomes and a mutation to where a child is born with XXY chromosomes would mean that the child Would have Klinefelter syndrome. A child with XX chromosomes is a female and a child with XY chromosomes is a male. The mutation has an extra gamete.

I hope this helps! :)

The correct answer for the given question about Klinefelter syndrome is Sex characteristics Traits.

Thus we can conclude that such condition will be called as Klinefelter syndrome as Sex characteristics Traits gets affected.

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Answer:

Lol! I had this for homework for biology class too.  Thymine should be 5%, and Guanine and Cytosine should both be 45% I think.

Explanation:

Since A is 5% and T pairs with A, T should also be 5%. These two combined is 10%.

100-10 = 90

We still have two left, Guanine and Cytosine, so 90/2 = 45

That should mean G and C are both 45%.

Since tongue rolling ability is determined by a single gene with two separate alleles—the dominant allele, which codes for tongue rolling ability, and the recessive allele, which codes for tongue rolling incapacity—tongue rolling ability is a discontinuous variation.

The hereditary characteristic known as tongue rolling ability controls whether or not a person can roll their tongue into a tube shape. This characteristic is frequently used as an illustration of a straightforward hereditary trait with discontinuous variation since there are only two possible outcomes: either a person rolls their tongue or they do not.

Either a person has the recessive allele, which prevents them from rolling their tongue, or they have the dominant allele, which allows them to roll their tongue. There is no intermediate or in-between trait, and the presence or absence of the dominant allele is a distinct, plainly observable phenotype.

Therefore, the capacity for tongue rolling is an illustration of a discontinuous variation.

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Answer:

lead

Explanation:

Lead element is also an air pollutant. Thus option B is correct.

What are the air pollutants?

Any physical, chemical, or biological changes in air due to contamination by incorporation of harmful gases, dust, and smoke causes air pollution.

The imbalance in the gaseous concentration in air lead to global warming.

There are two major types of air pollutants such as Primary and Secondary Pollutants,

Primary pollutants cause air pollution directly and secondary pollutants are generated by intermingling of primary pollutants.

Lead, Fly Ash, Metallic Oxides, Nanoparticles, Carbon monoxide (CO), Carbon dioxide (CO2), Chlorofluorocarbons (CFCs), Ozone (O3), Nitrogen oxide (NOx), Sulphur dioxide (SO2) are some examples of air pollutants.

A hazardous heavy metal called Lead can cause serious damage to different physiological system of the human body like nervous system damage, Digestive system, affect kidney.

It can also cause cumulative food poisoning. Hence, Lead was banned to add fuels. Thus option B is correct.

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Answer:

2) C) band C

3) B) PCR

Explanation:

Answer:

Amoeba and Paramecium

Answer:

Amoeba,

Euglena

Explanation:

In biology, binary fission is a type of asexual reproduction where a parent cell divides, resulting in two identical cells, each having the potential to grow to the size of the original cell. ... Binary fission is common among prokaryotes, e.g. archaea, eubacteria, cyanobacteria, and certain protozoans (e.g. amoeba)

Answer: I put Mammals, The victim was not stubbed.

Explanation: im not really sure about but the final answer for the presentation/assignment is "Professor Astro used a cougar attack in the kitchen"

Answer:

Giving milk to its young

Answer:

C

Explanation:

Mammals are the only class of animals that feeds their young with milk they produce which is called mammalian milk or "True Milk".

Answer:

Asexual reproduction produces offspring from just one parent. These offspring are genetically identical to that one parent.

Explanation:

Answer:

Israel borders Egypt, Jordan, Lebanon, Syria, and the Palestinian territories of West Bank and the Gaza Strip; it shares maritime borders with Cyprus.

Explanation:

yayy boom

Answer:

3

Explanation:

There are three domains of life, the Archaea, the Bacteria, and the Eucarya.

Answer:

There are 3 domains

Explanation:

the Archaea, the Eucarya, the Bacteria.

Answer:

C

Explanation:

Explanation:

The answer is ( faramones). for mating purposes..

Answer: The steps of a specific immune response includes: antigen recognition --> antigen presentation--> clonal expansion--> attack.

Explanation:

In the resistance of the body to infection, the human body has the ability to develop extremely powerful specific immunity against individual invading agents such as lethal bacteria, viruses, toxins and even foreign tissues from other animals. A typical example of a specific immunity is the ADAPTIVE or ACQUIRED IMMUNITY. This is defined as the immunity caused by a special immune system that forms antibodies and/ or activate lymphocytes that attack ans destroy the specific invading organisms or toxins.

There are two types of adaptive immunity which include the cell mediated immunity and the antibody mediated immunity.

The steps and the cells involved in these specific immune response includes:

--> ANTIGEN RECOGNITION: these invading organisms or agents contains one or more specific chemical compounds in its makeup that are different from all other compounds. These substances are called ANTIGENS. The T -lymphocytes and the B- lymphocytes are able to recognise and be sensitized by these antigen particles.

--> ANTIGEN PRESENTATION: These antigens need to be presented to the T- lymphocytes unlike the B- lymphocytes that bind antigen particles without having to be presented by any antigen presenting cell. Example of antigen presenting cell is the MACROPHAGES. they present the antigen to T-lymphocytes by engulfing and digesting the antigen which they transport the most antigenic fragment to their own cell membrane where it is displayed on their surface.

--> CLONAL EXPANSION: After presentation of the antigen to the T- lymphocytes, it stimulates the division and proliferation of the T- lymphocytes to produce specialised T- lymphocytes which will attack the original antigen in different ways.

--> ATTACK: After clonal expansion of T-lymphocytes the specialised T- lymphocyte cells produce initiates different attacks. These cells include:

• Memory T- cells: these long-lived cells survive after the threat has been neutralised and provide specific immunity by responding rapidly to another encounter with the same antigen.

• Cytotoxic T- cell: they directly inactivate any invading target cell and release powerful toxins.

• Helper T-cells: These cells produce special chemicals called cytokines which support and promote Cytotoxic T-lymphocytes and macrophages.

•suppressor T-cells: These cells act as 'brakes', turning off activated T- lymphocytes thereby limiting the powerful and potentially damaging effects of the immune response.