Question

What change do you see over the 100-year period?






















Suggest one reason why this change might have occurred.






















If this population continued for the next 100 years with no changes in arm length, what could you say about these sea stars?

Answer 1

Hello!

If this change is about population, then:

QUESTION 1: Our population went from 1.5 billion to 6.1 billion in just 100 years.

QUESTION 2: The population is growing so fast because birth rates are becoming much higher than death rates.