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.
Answer:
...
defination;global warming is a slow and and steadt rise in earths surface temprature.it occurs when carbon dioxide and green house gases collect in the atmosphere and collect sunlight.global warming started happening many years ago by burning fossil fuels and coal,gas just to run factories. today there is more carbon dioxide in the atmosphere.sea levals hv also been rising up. to reduce global warming, we need to reduce the green house gases in the atmosphere. we also need to stop burning bushes,dry leaves. this will reduce global warming much better.
Answer:
Correct answer is b- Permanent population
.
Explanation:
Option A is not correct as every state needs to have a defined territory, which is established in a certain period.
B is correct as population of country changes due to different reasons, including for example the migrations.
C is not correct as every country has its leadership. For example, if it is a monarchy, it has a unique monarch (king).
D is also correct as every country has its official language.
Answer:
It would be phytoplankton.
C because graduated terrace steps are commonly used to farm on hilly or mountainous terrain. Terraced fields decrease both erosion and surface runoff, and may be used to support growing crops that require irrigation, such as rice. ( It basically means that terraced farming is farming over steps and using rain to wash away old soil so that's where the wet part comes in)
