In a cell that is undergoing mitosis, what first happens to the chromosomes after the nuclear envelope breaks down?

a. they replicate to make a new copy of  dna  .

b. they line up at the equator of the cell.

c. they pair up as homologous chromosomes.

d. they are moved to either pole of the cell.

They line up at the equator of the cell

Explanation:

Took the test

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.