Answer:
i feel like there should be more to the question so you can get a better answer but i will say direct
Explanation:
sorry if im wrong
Answer:
To burrow through the earth, a worm will flex its circular and longitudinal muscles to make itself long, then will extend the setae on its anterior, or front end to anchor itself in the earth. It will then contract its muscles to make its body short and bring the posterior, or back end, closer to the front.
Answer:
In ecology, any force that affects the size of a population of living things in response to the density of the population (the number of individuals per unit area).
Explanation:
i hope that helped im sorry if i didnt:(
