D. single- and simple multi-celled organisms
Although more complex animals like invertebrates and multi-celled organisms began to appear, it was very late compared to the original, simpler organisms for which the Precambrian time is characterized by.
The consumer would have to make what they need themselves or find someone who can make what they need and of course pay them.
Iran, Iraq, Saudi Arabia
These three countries fall in the desert area.
Streams flowing from mountainous terrain commonly flow across alluvial fans at the edges of the valleys. ... In arid and semiarid regions, seepage of water<span> from the stream can be the principal </span>source<span> of aquifer recharge.</span>
translation
Rotation
Reflection
Glide Reflection
(Im not 100% sure That I got it write)