Question

Someone please help

About 1.5 billion years ago, after about 2 billion years of ONLY prokaryotic organisms inhabiting the earth, a sharp increase in the number of species began. What specific milestone happened? What type of general event (that led to a spurt of speciation) was this and why did it lead to a spurt of speciation?

Its ok if you just know what general event it was that led to increase in species about 2 billion years ago

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Answer 1

Answer:

Someone please help

About 1.5 billion years ago, after about 2 billion years of ONLY prokaryotic organisms inhabiting the earth, a sharp increase in the number of species began. What specific milestone happened? What type of general event (that led to a spurt of speciation) was this and why did it lead to a spurt of speciation?

Its ok if you just know what general event it was that led to increase in species about 2 billion years ago

please don't spam

Answer 2

Explanation:

ᴍɪᴄʀᴏʙᴇꜱ ᴄᴏᴜʟᴅ ʜᴀᴠᴇ ᴘᴇʀꜰᴏʀᴍᴇᴅ ᴏxʏɢᴇɴ-ᴘʀᴏᴅᴜᴄɪɴɢ ᴘʜᴏᴛᴏꜱʏɴᴛʜᴇꜱɪꜱ ᴀᴛ ʟᴇᴀꜱᴛ ᴏɴᴇ ʙɪʟʟɪᴏɴ ʏᴇᴀʀꜱ ᴇᴀʀʟɪᴇʀ ɪɴ ᴛʜᴇ ʜɪꜱᴛᴏʀʏ ᴏꜰ ᴛʜᴇ ᴇᴀʀᴛʜ ᴛʜᴀɴ ᴘʀᴇᴠɪᴏᴜꜱʟʏ ᴛʜᴏᴜɢʜᴛ.

ᴛʜᴇ ꜰɪɴᴅɪɴɢ ᴄᴏᴜʟᴅ ᴄʜᴀɴɢᴇ ɪᴅᴇᴀꜱ ᴏꜰ ʜᴏᴡ ᴀɴᴅ ᴡʜᴇɴ ᴄᴏᴍᴘʟᴇx ʟɪꜰᴇ ᴇᴠᴏʟᴠᴇᴅ ᴏɴ ᴇᴀʀᴛʜ, ᴀɴᴅ ʜᴏᴡ ʟɪᴋᴇʟʏ ɪᴛ ɪꜱ ᴛʜᴀᴛ ɪᴛ ᴄᴏᴜʟᴅ ᴇᴠᴏʟᴠᴇ ᴏɴ ᴏᴛʜᴇʀ ᴘʟᴀɴᴇᴛꜱ.

ᴡʜʏ ᴅɪᴅ ᴛʜᴇ ʟᴇᴠᴇʟꜱ ᴏꜰ ᴏxʏɢᴇɴ ʀɪꜱᴇ 2.4 ʙɪʟʟɪᴏɴ ʏᴇᴀʀꜱ ᴀɢᴏ?

ᴛʜᴇ ʟᴇᴠᴇʟꜱ ᴏꜰ ᴏxʏɢᴇɴ ᴅʀᴀᴍᴀᴛɪᴄᴀʟʟʏ ʀᴏꜱᴇ ɪɴ ᴛʜᴇ ᴀᴛᴍᴏꜱᴘʜᴇʀᴇ ᴀʀᴏᴜɴᴅ 2.4 ʙɪʟʟɪᴏɴ ʏᴇᴀʀꜱ ᴀɢᴏ, ʙᴜᴛ ᴛʜᴇ ʀᴇᴀꜱᴏɴ ʙᴇʜɪɴᴅ ɪꜱ ꜱᴛɪʟʟ ᴅᴇʙᴀᴛᴇᴅ.

ꜱᴏᴍᴇ ꜱᴄɪᴇɴᴛɪꜱᴛꜱ ᴛʜɪɴᴋ ᴛʜᴀᴛ ᴄʏᴀɴᴏʙᴀᴄᴛᴇʀɪᴀ (ʙʟᴜᴇ-ɢʀᴇᴇɴ ᴀʟɢᴀᴇ), ᴡʜɪᴄʜ ᴄᴏᴜʟᴅ ᴘᴇʀꜰᴏʀᴍ ᴏxʏɢᴇɴ-ᴘʀᴏᴅᴜᴄɪɴɢ ᴘʜᴏᴛᴏꜱʏɴᴛʜᴇꜱɪꜱ, ꜰɪʀꜱᴛ ᴇᴠᴏʟᴠᴇᴅ 2.4 ʙɪʟʟɪᴏɴ ʏᴇᴀʀꜱ ᴀɢᴏ.

ᴏᴛʜᴇʀ ꜱᴄɪᴇɴᴛɪꜱᴛ ᴛʜɪɴᴋ ᴛʜᴀᴛ ᴄʏᴀɴᴏʙᴀᴄᴛᴇʀɪᴀ ᴇᴠᴏʟᴠᴇᴅ ʟᴏɴɢ ʙᴇꜰᴏʀᴇ 2.4 ʙɪʟʟɪᴏɴ ʏᴇᴀʀꜱ ᴀɢᴏ ʙᴜᴛ ꜱᴏᴍᴇᴛʜɪɴɢ ᴘʀᴇᴠᴇɴᴛᴇᴅ ᴏxʏɢᴇɴ ꜰʀᴏᴍ ᴀᴄᴄᴜᴍᴜʟᴀᴛɪɴɢ ɪɴ ᴛʜᴇ ᴀɪʀ.