What natural resources are pumped from the ocean

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

How many cells are our body made of ? ♡

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters