Two! each gene has two alleles!
Answer:
d
The salinity of ocean water can be determined by measuring the conductivity of the water. ... The electric current is flowed through the water and as we know salt water is a good conductor of electricity it will pass the current fast. Using this technique oceanographers determine the salinity of water
Explanation:
A permeable soil allows water to flow through it easily because the spaces between the inorganic particles are large and well connected. Sandy or silty soils are considered 'light' soils because they are permeable, water-draining types of soils. Soils that have lots of very small spaces are water-holding soils.
Answer:
option c
Explanation:
A natural blind spot also called the optic disc in the eyes occurs where the blood vessels and axons of the ganglion cells leave to form the optic nerve. it is so called because there are no receptors (rods and cones) in this part of the retina. Artificial blind spots can also be formed when something prevents light from getting to the photoreceptors which are the rods and the cones.
A.rotation of earth is the correct answear