1.)an ambulance has its siren on. what direction is the ambulance moving relative to you if the siren is decreasing in pitch?
a
behind you
b
maintaining the same position
c
toward you
d
away from you
2.) loud sounds can affect your hearing by damaging the hairs and nerve cells in the cochlea.
a
true
b
false
3.) a large explosion can damage a person's hearing. what causes this damage?
a
the explosion triggers smaller explosions inside the ear.
b
compression waves from the explosion cause vibrations that damage the ear.
c
transverse waves from the explosion cause vibrations that damage the ear.
d
heat from the explosion burns the eardrum.
u8l3

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.