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.
When to Renew a Green Card. You should renew your green card if you are a permanent resident with a Form I-551 valid for 10 years and the card is either expired or will expire within the next 6 months. Note: If you are a conditional resident and your status is expiring, these instructions do not apply to you.