4:C, the third one. 5:D, the fourth one.
Answer:
C) Photosynthetic bacteria, invertebrates, vertebrates, reptiles, amphibians, mammal.
Explanation:
- From looking at the above records of evolutionary life on earth the traces of living fossils and organisms that are evolved to the biogenic carbon signatures and the earliest known stromatolite fossils on earth the evidence of 3.7 billion year rocks taken from western Greenland.
- All show the occurrence of first life forms as photosynthetic bacteria and evolution of soil and oxygen in it took place then the invertebrates plat and animals appeared on land and oceans like the nematodes and arthropods, after which started to evolve like the vertebrates like the tetrapod the first fish with four limbs in 360 million years.
- After which reptiles and dinosaurs are the largest land reptiles evolved and then came the amphibian likes and then lead to the evolution of man and other mammals.
I think it’s the second one.
A *life support system* is defined as the interrelationship between living beings and environment.
The groundwater is the largest freshwater reservoir on Earth in liquid form. These waters though are not isolated from the rest of the freshwater, but instead they are connected with the streams, thus they affect them heavily.
The groundwater has been heavily used in the last century, and it has been depleted. The depletion of the groundwater has been the result of over usage, or to put it simple, more water has been extracted than what naturally is replenished.
This has been causing more and more problems. Apart from the groundwater resources getting depleted and than be unusable, the depletion of their water has resulted in lowering of the level of water of the streams, as the streams have been receiving less and less water. Also, because there is much less water and it mixes with lot of ground and rocks, the water quality has been becoming worse and worse, and if this trend continues it can have devastating effects.