Answer:
(1) Chloroplast
Explanation:
Cells of living organisms are made up of certain function-specific structures called ORGANELLES. Some organelles are present in plant cells and absent in animal cells and vice versa. In a plant cell, one notable organelle that allows it perform the photosynthetic process is the CHLOROPLAST.
However, the chloroplast is predominantly found in the LEAF part of a plant. This is because leaf cells are the site of photosynthesis. Hence, according to this question, Joe would be able to tell whether the plant cell was from the leaf or the root by looking for CHLOROPLAST as a differentiating factor in each cell.
The tiny holes in a sponges outer layer that take in water are called ostia, I believe. Hope it helps
The second thesis statement is perfect. It supports the claim and presents main idea.
Answer:
1) Increasing temperature
2) Stirring
3) Increasing surface area of salt by grinding it
