Which sound would most likely have the lowest pitch?
a bird chirping
a vacuum-cleaner running
a lawn mower running
a dog barking

It would most definitely be a lawn mower

a vacuum- cleaner running.

The frequency at which the sound waves resonate or vibrate is the pitch of the sound. Pitch is a perceptual property of sound. It allows us to judge the quality of sound as high or low. A vacuum- cleaner running is an example of low pitch because it is an electrical instrument, which is used for cleaning purpose in household and offices. The sound of vacuum cleaner remains same during the working process. It's pitch remains low and constant through out the working process. On the other hand, the pitch of bird, a lawn mower runner and a dog barking usually remains high.

correct answer: biotic and abiotic limitations

carrying capacity is defined as the total number of an organism who can be supported in a given area within the natural resources limit and without harming or degrading the natural, economic or the cultural environment present for the future generations.

carrying capacity is determined by the limiting factors, which are known to affect the natural resources available. it may include water, nutrients, minerals, space, light etc.

explanation:

hope this ! have a wonderful day!