All animals and plants are made of cells. Animal cells and plant cells have features in common, such as a nucleus, cytoplasm, cell membrane, mitochondria and ribosomes. Plant cells also have a cell wall, and often have chloroplasts and a permanent vacuole.
Asker's rating. Report Abuse. You can stay outside for up to 2 years with a re-entry permit ...but you must keep a presence here ..home, bank account ..etc but for stays of over 6 months its best to get one a green card is for living here ...if you are not doing that you eill lose it. David Â· 6 years ago. Thumbs up. 2.
To become U.S. citizens, foreigners must first become permanent residents (green card holders). Legal residents can apply for U.S. citizenship, but after five years of being green card holders. For immigrants married to U.S. citizens, from green card to U.S. citizenship will take around three years. People who received their resident cards based on having received asylum status can apply for naturalization four years from the date on which they received their resident cards.