Interestingly, although they are all referred to as algae, the red, green and brown algae are classified into three different kingdoms: the protists, chromists and Plantae, respectively. The algae all have cell wall structures and are capable of photosynthesis like our plants on land.nterestingly, although they are all referred to as algae, the red, green and brown algae are classified into three different kingdoms: the protists, chromists and Plantae, respectively. The algae all have cell wall structures and are capable of photosynthesis like our plants on land.
You put documents in a folder for storage; a letter would go in an envelope.
Applied to your files and documents, the general rule is that they should always sit with other files of the same, equivalent hierarchical level. For example, application installers can sit in the same folder. Dated to-do lists can sit in the same folders. Personal letters to friends can sit in the same folder.