Astudent is studying mitosis, in which a cell divides to form two cells. which of these shows the correct mathematical model for the process if nold shows the number of chromosomes in the parent cell and nnew shows the number of chromosomes the individual daughter cells?
a) nnew = nold
b) nnew = nold/2
c) nnew = 2 × nold
d) nnew = 4 × nold

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.

1. watermelon, papaya, oranges, bananas, and lemons are included in this food group. vitamin c 2. you need 6 or more servings of this food group each day vitamins d and a 3. found in fruit and keeps blood vessels healthy calcium 4. vitamins found in milk bread and grain 5. a mineral that strengthens bones fruit

All organisms contribute some water to the water cycle by conducting