Question

what are the causes of desease​

Answer 1

Answer:

A disease may be caused by external factors such as pathogens or by internal dysfunctions. For example, internal dysfunctions of the immune system can produce a variety of different diseases, including various forms of immunodeficiency, hypersensitivity, allergies and autoimmune disorders.

Answer 2

Answer:

. ʙᴀᴄᴛᴇʀɪᴀ. ᴛʜᴇsᴇ ᴏɴᴇ-ᴄᴇʟʟ ᴏʀɢᴀɴɪsᴍs ᴀʀᴇ ʀᴇsᴘᴏɴsɪʙʟᴇ ғᴏʀ ɪʟʟɴᴇssᴇs sᴜᴄʜ ᴀs sᴛʀᴇᴘ ᴛʜʀᴏᴀᴛ, ᴜʀɪɴᴀʀʏ ᴛʀᴀᴄᴛ ɪɴғᴇᴄᴛɪᴏɴs ᴀɴᴅ ᴛᴜʙᴇʀᴄᴜʟᴏsɪs.

. ᴠɪʀᴜsᴇs. ᴇᴠᴇɴ sᴍᴀʟʟᴇʀ ᴛʜᴀɴ ʙᴀᴄᴛᴇʀɪᴀ, ᴠɪʀᴜsᴇs ᴄᴀᴜsᴇ ᴀ ᴍᴜʟᴛɪᴛᴜᴅᴇ ᴏғ ᴅɪsᴇᴀsᴇs ʀᴀɴɢɪɴɢ ғʀᴏᴍ ᴛʜᴇ ᴄᴏᴍᴍᴏɴ ᴄᴏʟᴅ ᴛᴏ ᴀɪᴅs.

. ғᴜɴɢɪ.

. ᴘᴀʀᴀsɪᴛᴇs.

Explanation:

..✌✌ᴍᴀʀᴋ ᴀs ʙʀᴀɪɴʟɪsᴛ