Marine biologists are concerned that pollution from a nearby factory has affected the health of local sea urchins. Which of the following is most
likely to be the population of interest? *
A. 4 sea urchins with abnormal coloration
Q
B. All of the sea urchins in the entire ocean
C. 20 sea urchins gathered from tidal pools
D. All of the sea urchins near the plant

chromosomes carry the genetic information for organisms. also, chromatin is the thread like dna which is located in the nucleus of an organism.

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.