The order of the lumen layers is mucosa, submucosa, muscularis externa, and serosa. The correct option is D.
The gastrointestinaltract is indeed the digestive tract or passageway that connects the mouth to the rectum. In humans and other animals, the GI tract contains all of the major organs of the digestivesystem, including the esophagus, stomach, and intestines.
The alimentarytract's primarily chief function is to transform food into absorbable particles and transport them to the body's other organs.
Every organ of the alimentarycanal has the same four basic layers, from the esophagus to the rectalcanal.
Mucous membrane, submucosa, muscular layer, and serous layer are the correct layers within the alimentary canal wall from inside to outside.
Thus, the correct option is D.
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President Richard Nixon established the U.S. environmental protection agency.
The Environmental Protection Agency is an independentexecutive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it began operation on December 2, 1970, after Nixon signed an executive order.
The Environmental Protection Agency protects people and the environment from significant health risks, sponsors and conducts research, and develops and enforces environmental regulations.
The Environmental Protection Agency (EPA) is a federal government agency, created by the Nixon Administration, to protect human health and the environment. The EPA creates and enforces environmental laws, inspects the environment, and provides technical support to minimize threats and support recovery planning.
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Answer:
richard nixon
Explanation:
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Cyanobacteria all live in aquatic environments and use photosynthesis to make their own food. Additionally, all cyanobacteria belong to the larger class of bacteria, which is one of the largest groups of organisms. Most cyanobacteria are unicellular, and they typically live in large colonies.
Answer: Cyanobacteria also known as blue green algae , they make their food by the process of photosynthesis.
Explanation: features of Cyanobacteria :-
Photosynthesis in Cyanobacteria is because of the presence of two pigments green pigment chlorophyll and blue pigment phycobilins. They found in aquatic and terrestrial habitat. They are adapted to live in extreem conditions.
They do not have membrane bound nucleus and other organells.
Answer: A genotype Tt (f) will make their child not to have freckles. Only offspring with alleles containing the dominant gene 'F' will have freckles.
Explanation:
MENDEL'S PRINCIPLES OF INHERITANCE can be used to understand how genes and their alleles are passed down from one generation to the next.
The 3 principles include:
1. Law Of Dominance And Uniformity: Some alleles are dominant while others are recessive; an organism with at least one dominant allele will display the effect of the dominant allele.
2. Law of segregation: During gamete formation, the alleles for each gene segregate from each other so that each gamete carries only one allele for each gene.
3. Law of independent assortment: Genes of different traits can segregate independently during the formation of gametes.
Answer:
Biotic and nonliving
Explanation:
Biotic - A biotic component is relating to living organisms or resulting from it. For example animals, plants, bacteria, table, chair etc.
Abiotic - Abiotic components are not derived from the living organisms, that is they are not biological instead they are physical. For example wind temperature etc.
Living - Living things are those things that were once or that are now alive. For example humans. They can also feel happiness, anger etc.
Non-living things are those which were never alive for example bucket, rock etc.