Diatoms have cell walls composed of silicon dioxide.
A. silicon dioxide.
Answer:
6 giraffes
Explanation:
If an area can provide 450 pounds of food for the giraffes and the giraffes eat 75 pounds of food per day, you can divide:
450 by 75= 6
6 giraffes is the capacity for that area
Answer:
It forms from sandstone that has come into contact with deeply buried magmas. Quartzite looks similar to its parent rock. The best way to tell quartzite from sandstone is to break the rocks. Sandstone will shatter into many individual grains of sand while quartzite will break across the grains.
There are
39
chromosomes in their haploid cells.
Explanation:
During meiosis I, the
78
chromosomes in a diploid cell line up at the equator of the cell. Note that the chromosomes have already replicated.
