Answer:
Bacteria and other living cells have some universal features that are, they are present in all the living cells.
These features include:
Plasma membrane: The lipid bilayer which separates the cell from the external environment. It is present in all the living organism.
Cytoplasm: It is a gel-like substance present within the plasma membrane of the cell (excluding nucleus). It contains and supports all the cell organelles and cell parts.
Ribosome: It is a vesicular structure made up of protein and ribosomal RNA. It is the main site of protein synthesis in all the cells. Prokaryotes generally contain 70S ribosomes and eukaryotes generally contain 80S ribosomes.
Genetic material: All the living organisms contains genetic material (usually DNA) either confined in the nucleus or floating freely in the cytoplasm.
B. lakes
C. rivers
D. ponds
Answer:
The correct answer is A. Marshes. :)
Explanation:
An example of a wetland ecosystem would be marshes, as they are regions where water is the primary factor controlling the environment and the associated plant and animal life. Lakes, rivers, and ponds are examples of aquatic ecosystems, not wetland ecosystems.
The correct answer to your question, 'Which of the following would be an example of a wetland ecosystem?' is marshes (option A). Wetlands are regions where water is the primary factor controlling the environment and the associated plant and animal life. They occur where the water table is at, or near the surface of the land. Different types of wetland ecosystems include marshes, swamps, and bogs.
Marshes, specifically, are a type of wetland where vegetation is dominated by herbaceous plants. Lakes, rivers, and ponds (options B, C and D respectively) are all instances of aquatic ecosystems, rather than wetland ecosystems. Lakes and ponds are standing or lentic waters, while rivers are flowing or lotic waters.
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The unpredicted changes in the genetic material of chromosomes in a cell is known as Mutation. Mutations are the changes in gene caused by mutagens. Thus, the correct option is A.
Mutation can be defined as any change in the DNA sequence of a cell. These may be caused by mistakes during the cell division, or may be caused by exposure to DNA-damaging agents in the environment which are called Mutagens. Mutations can be harmful, beneficial, or have no effect.
Mutations can affect an organism by changing the phenotype or it can impact the way DNA of an organism codes the genetic information. When mutations occur in an organism they can cause termination of an organism or can be partially lethal.
Therefore, the correct option is A.
Learn more about Mutation here:
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First we have to understand that a food chain is a series of steps in which organisms transfer energy by eating and being eaten. A food web is a feeding relationship among the various organisms in an ecosystem that forms a network of complex interactions. A food web links all the food chains in an ecosystem.
Answer: Grass, Grasshopper, Snake, Hawk.
I hope this helps, Regards.
Answer:
Lesson 3: Movement of Energy in Ecosystems
Explanation:
1. B. grass,grasshopper,snake hawk
2. D. eliminated as heat
3. C. river
4. A. Biomass at the fourth trophic level is approximately ten times smaller than biomass at the trophic level.
Answer: B The Geological Time Scale
Explanation: