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.
Although your green card allows you to stay outside the United States for a period of six months to a year, you may not remain abroad continuously for over one year. Green Cards and Proof of Intent The Department of Homeland Security (DHS) may use any continuous absence of over one year to establish the legal permanent residentâs intent to abandon his or her status.