secondary succession takes place in a grasslands and primary succession takes place in rocky desert.
secondary succession also progresses faster.
when you skin your knee, cells divide to replace old, dead, or damaged cells. cells also divide so living things can grow.
we must study the sun as it is a source of energy and we need to understand stars in general. our planet orbits the sun and we want to learn about how our planet works
challenges they may face could be heat, and difficulty to get an object to the sun.