Fill in the blanks. Photosynthetic life changed the by producing large amounts of and this in turn allowed for to evolve on Earth. Soil microorganisms known as created fertile which is part of the . This allowed for to evolve. Stromatolites created in the which changed erosion, deposition and created many homes for organisms. This increased the of life.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

correct answer: false

while planning water activities, it is very important to consider the weather, because if we do not plan and are going for a surf, then it might be that the hurricane came and drown us or may carry us to long distance from where we can not come back. there are many reasons to take information about the weather when we are planning any water activities.

hence, the correct answer would be false.