Actin filaments are found in cells that form cytoskeletal structures. These are generally present below the plasma membrane.
Amoebae move by crawling over a surface (cell crawling), which involves GROWTH OF ACTIN FILAMENTS TO FORM PSEUDOPODIA. Pseudopodium is a bulge in the plasma membrane towards the direction of movement.
The answer is (B) Brain. This is because the brain is a part of what is known as the nervous system just as the lungs are part of what is known as the respiratory system.
Answer:
is respect
Explanation:
it's mean you give some respect
Conceptually, one can define three generations of renewables technologies, reaching back more than 100 years .
First-generation technologies emerged from the industrial revolution at the end of the 19th century and include hydropower, biomass combustion and geothermal power and heat. Some of these technologies are still in widespread use.
Second-generation technologies include solar heating and cooling, wind power, modern forms of bioenergy and solar photovoltaics. These are now entering markets as a result of research, development and demonstration (RD&D) investments since the 1980s. The initial investment was prompted by energy security concerns linked to the oil crises (1973 and 1979) of the 1970s but the continuing appeal of these renewables is due, at least in part, to environmental benefits. Many of the technologies reflect significant advancements in materials.
Third-generation technologies are still under development and include advanced biomass gasification, biorefinery technologies, concentrating solar thermal power, hot dry rock geothermal energy and ocean energy. Advances in nanotechnology may also play a major role.
