What is the role of photosynthesis in the flow on energy throughout an ecosystem?

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet?

How does the structure of dna hold the information needed to code for the many features of multicellular organisms?

Use the drop-down menus to match each part of the scenario to the correct scientific practice. akira records the speed of a reaction without a catalyst and then with a catalyst. akira creates a reaction without a catalyst and repeats the reaction with a catalyst. akira turns in a written lab report to his science teacher. akira wonders, "will adding a catalyst speed up this chemical reaction? " akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowers the activation energy needed to get the reaction started.