(k12 7th grade science 5.10) this question is worth 98 points. all these questions are about sea stars. 1. what change do you see over the 100-year period? 2. suggest one reason why this change might have occurred. 3. if this population continued for the next 100 years with no changes in arm length, what could you say about these sea stars?

Idont have a picture for a good answer

Do you have any options, or is it written? also, if you are doing this in 2018, k12 has quiz , you can find it in materials and the teacher practically gives you the answer.

Idont understand i'm sorry

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on