The table below shows the fossils of organisms found in various layers of an undisturbed rock: fossils in rock layers layer (from top) fossils in layer 1 x, w 2 w 3 z 4 y, u which statement about the organisms whose fossils are found in the rock is correct? organism w existed much before organism y. organism y existed over the longest period of time. organism y and organism u were alive over the same time span. organism w existed over a shorter period of time than organism x.

Organism Y and Organism U were alive over the same time span.

Explanation:

According to the Law of Superposition, rock layers and fossils that come with it are older than the layers on top of it. So if you look at your list, rock layer 4 is the oldest layer/fossils and gets younger as it goes up.

The fossils in rock layer 4 are Y and U and this makes them the oldest fossils and you do not see them in any other rock layer, this means that they did not exist anymore when the other layers formed. This rules out statement 1.

U existed along with Y so this rules out statement 2. As for the last statement, look at organism W, it is found in both layer 2 and layer 1. This means that it still existed when layer 1 was forming, so it already existed before organism X appeared.

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.