Which of the following is NOT true of a physical change? * a. The substance is same before and after the reaction
b. The chemical properties are different
c. One or more physical properties are changed
d. The reaction can be reversed

Which ideas did your answer contain? check all that apply. no food for organisms no oxygen in the atmosphere no trees or flowering plants no products based on trees or plants (building materials, medicines, fuels, fibers) no fossil fuels

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?