Describe one important piece of machinery in plant cells, and how that machinery helps keep plant cells alive. Pleas help. This is a school assignment. (This is 7th grade science).

Granite rock is light in color. which feature directly contributes to this color? the process that forms granite the amount of silica minerals in granite the shape of the grains found in granite the unique pattern formed by grains in granite

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

Urgent. the table shows the relative blood flow through some organs in the human body that is, the percentage of blood that flows through a given organ, through which organ(s) does all the blood flow? explain the effect of exercise on blood flow to skeletal muscles.