That is in Ankara, Turkey
Answer:
The Bulk density = 1.3 g/cm³
the porosity of the sample is 132 cm³
Explanation:
Given:
Volume of cylinder = 260 cm³
Mass of container and the soil = 403 g
Mass of the empty container = 65 g
Thus,
The mass of the soil is = 403 - 65 = 338 g
Now,
The Bulk density = 
or
The Bulk density = 
or
The Bulk density = 1.3 g/cm³
also,
average particle density for mineral soil is usually given as 2.65 g/cm³
i.e the air present in the given soil sample has reduced its density from 2.65 g/cm³ to 1.3 g/cm³
The mass of the whole sample = Volume × Density
= 260 × 2.65
= 689 gm
but,
The actual mass of the dry sample = 338 g
thus,
Mass of air in the sample = 689 - 338 = 351 g
Therefore,
the volume of 351 g soil =
=
= 132.45 cm³
so the porosity of the sample is 132 cm³
Answer: need to compete for scarce water
Explanation:
Arid means a landscape where there is little water. Therefore if you had a farm in a arid region it would be important to compete for scarce water.
Hope this helps!!!
Most smaller stars don't have a radiative zone. In the radiative zone, the material is hot and dense which enables thermal radiation transfers from the core outward though the Sun. This layer is size dependent therefore smaller stars might not have this zone at all.
Answer:
B. Sent through electrical signals
Explanation:
Information is passed from the retina to the brain via electric signals through the optic nerves. The optic nerves are a very important part of the visual system of the body in that they carry electric signals from the retina to the brain.
- The brain therefore interprets the signal and conceptualizes it.
- Light on the retina stimulates the cones and rods which in turn generate electrical signals.