Explanation:
answer for Q7
Why is excess use of fertilizers detrimental for environment?
answer
Excess use of fertilizers causes environmental pollution as their residual
and unused amounts
become pollutants for air, water and soil,by causing eutrophication in the water bodies, decreasing the soil quality by killing the soil microflora etc.
Hence, excess use of fertilizers is detrimental to the environment.
Q8
What Is a Genetically Modmed Croos (GMCs)? Name any one such crop
answer
Crop which has been developed by introducing a new gene from any other source, to obtain the desired character, is called as genetically modified (GM) crop. Bt Cotton is an example of GM crop which is made insect resistant by introducing a gene from a bacteria, Bacillus thuringiensis.
plz mark me as brainliest
Answer:
9.21 m
Explanation:
because this is the answer
The ratio of crown's apparent weight to its actual weight is (1-.
Let then density of the crown is ρ_{c}, the density of the water is ρ_{w}. and the volume of the crown is V
The actual weight of the crown is given as
Wa=ρ_{c}×V×g
Since the volume of the water displaced by the crown is equal to the volume of crown, therefore the buoyancy force exert by the water on the crown is given as
Fw=ρ_{w}×V×g
The buoyancy force will act in the opposite direction of the weight of the crown, therefore the apparent weight of the crown is
Wapp=[ρ_{c}-ρ_{w}]×V×g
Now the ratio of the apparent weight to the actual weight is
== (1-
Light energy is not kinetic energy
<span>First of all, the bolts wont hit the ground at equal time intervals because each bolt is constantly increasing. Therefore, the top will have different velocity with the bottom bolt at all times. this means that the bolts will speed up more as they are higher which will make the interval time shorter. therefore, the time will decrease</span>