Answer:
Precambrian, period of time extending from about 4.6 billion years ago (the point at which Earth began to form)
Explanation:
In which plate boundary two plates move towards each other and collide called convergent plate boundary. And causes devastation. E.g. Earthquake, Vulcanicity. In which plate boundary two plates move in opposite direction and do not collide called divergent plate boundary. Mountain building is the result of this type of plate boundary's action. In transform fault both the plates slide each other and causes fault in the sea floor.
Explanation:
Plate is a rigid and solid crustal block which is mobile in character and found in the asthenosphere in the upper mantle. It prevails in semi liquid and viscous condition where plates move easily. There are seven major plates and twenty minor plates. Plates are of two types. Continental plate and oceanic plate.
Where two plates collide with each other that area is known as plate boundary and the edge of plate is known as plate margin. Plate boundary is of three types: Convergent, divergent and transform plate boundary. These are also known as constructive, destructive and neutral plate boundaries.
The farming method that is used in dry or desert areas is the drip irrigation.
<h3>What is Drip irrigation?</h3>
Drip irrigation is defined as a method that is used in water irrigation, in which water passes through a filter and into customized drip pipes with spaced emitters.
A particular slow-release system deals that the water straight into the soil near the roots through the emitters. Drip irrigation is a farming technique that is mainly used in dry or desert locations.
Therefore, dip irrigation method is in dry or desert areas.
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Answer:
The answer is Option C: Index fossils.
Explanation:
Index fossils are used to identify geologic periods or faunal stages in rock layers. These fossils must have a wide geographic distribution and manifest obvious evolutionary trends to help geologists and others who need this geological data to better understand the time scale and to pinpoint a time period. For example, ammonites were common during the Mesozoic Era, but they were extinct by the Cretaceous period. Geologists would use ammonites to help determine this time frame if present.
True, The biomass of cultivated land around equals the biomass of temperate grassland.
According to this graph, algal beds and coral reefs have the most increased net primary productivity. The net primary productivity of an estuary ecosystem is around 12 times the net prior productivity of the open ocean.
<h3>What is the biomass of a plant?</h3>
Plant biomass (W) is the weight of living plant material included above and below a unit of ground surface area at a provided point in time. Production is the biomass or weight of organic matter incorporated by a society or species per unit land area per unit time.
<h3>What is biomass presentation in crops?</h3>
Biomass is emanated from organic material such as trees, plants, and agricultural and urban waste. The prevalence of biomass produced by EU agriculture comes in the formation of biogas, and feedstocks for making biodiesel and bioethanol.
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