Answer:
1. 2. chemicals in the injected fluids can get into groundwater that is used for drinking water;
B). Hydraulic fracturing allows geologists to capture natural gas stored in the pore spaces of shale.
Explanation:
- Fracking is a huge amount of the water that must be transported to sight at a significant environmental cost and occurrence of the minor tremors and is environmentally and potentially dangerous chemicals of they escape during the drilling and pollute the groundwater.
- And the hydraulic fracking is drilling methods used to extract the natural oil and gas from deep inside the earth and is used to study the geology of the earth.
NASA satellite observations and citizen science helped build a database called HIVE-OS to help local businesses understand variables like soil moisture and plants that affect honeybee health.
The average distance from Mars to the sun is 228 million km. What is this distance in kilometers? In scientific notation, it's 2.49209300 x 108 km. The wavelength of yellow light is approximately 0.00000058m.
Answer:
The scientists believe that they arose in Africa and spread to the rest of the world.
Explanation:
A is not correct because the Homo sapiens is not the earliest ancestor of moern humans, but it is the latest.
B is not correct because such evidence is lacking, and even though the Homo sapiens mixed with other hominids in Eurasia and sub-Saharan Africa, they were not of the same species.
C is correct because the evidence suggests for now that the Homo sapiens arose in Africa, and through several migration waves spread out on the other continents.
D is not correct because the Homo sapiens has not been replaced by any other species, as they are the species nowadays known as humans.
