Could you possibly tell me what exactly you need help with? As my computer already has viruses, I am surely not going to click on any of those. Sorry!
Answer:
The main difference between limestone and marble is that limestone is a sedimentary rock, typically composed of calcium carbonate fossils, and marble is a metamorphic rock. Limestone forms when shells, sand, and mud are deposited at the bottom of oceans and lakes and over time solidify into rock
Explanation:
This layering is a result of the process of metamorphism. Metamorphism is the changing of rocks by heat and pressure. During this process, rocks change either physically and/or chemically
Answer:
The transfer of mature pollen grain from anther of the flower to the stigma of the same flower of the same [species is called self pollination.
Generally, the transfer of pollen grains by wind,animals,and water to stigmas is called pollination. It is a means of vegetative propagation which ensures reproduction.
Therefore during self pollination, the same genes are distributed from one generation to another. Thus genetic purity is ensured. It also ensured reproductive success. because there is little chance of the pollen grain getting lost in transit. It is also certain a particular plant would always breed true.
Additionally it prevent the process of transfer of genes in some transgenic crops( rice, maize) where through genetic engineering some genes are introduced in their genome.
The only negative effect is lack of genetic diversity. Therefore after a period of time the plants get weak and prone to diseases and infection. Because of poor resistant from lack of variation.
Explanation:
The diagram is not given in the question, so the diagram is attached below: Answer:
step E
Explanation:
The viruses are assembled in Step E.
The assembly of the virus occurs in nucleus or cytoplasm of host cell.
In step D, viral components of virus are synthesized and in the next step E, The viral component assembled into mature virus.
Hence, the correct option is "Step E".
Answer:
Kronosaurus fue uno de los mayores reptiles marinos que existieron. Destacaba por el enorme tamaño de su cráneo, que alcanzaba los 3 metros, lo que nos da una longitud total de unos 10 metros. Era uno de los últimos pliosaurios que nadaron sobre la faz de la tierra.
Explanation:
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