Topsoil is the upper, outermost layer of soil, usually the top 2 inches to 8 inches. It has the highest concentration of organic matter and microorganisms and is where most of the Earth's biological soil activity occurs. Four elements constitute the composition of soil.
Animals burrowing and plant roots growing down into the soil create the pores in the soil for the air and the water.
The organic matter in the soil comes from the decay of dead plants and animals. Earthworms, bacteria and fungi are just a few of the organisms that live in the soil, feed on the organic matter and decay or recycle plant nutrients. All of the organisms that live in the soil are such an important part of the continuous, natural process of decomposing organic materials and preparing the soil for future plant growth
b. lake
c. salt marsh
d. upstream part of a river
(PLEASE HELP)
Select the item if it helps organisms keep their shape.
A.bone
B.smooth muscle
C.skeletal muscle
The areas of texture, appearance and the type of pressure applied during crystallization determines whether a metamorphic rock is foliated or non-foliated. Foliated rock is formed if the pressure applied to the recrystallizing rock is unequal. If the pressure applied to the recrystallizing rock is equal all over, a nonfoliated rock will be created.
The answer is D. learned behavior.
A change in behavior of an organism takes place due an experience is called learning. Animals learn behavior in many ways. On such way is given the question that anole lizard ate bright red butterfly instead small insects which are its normal food and became ill. Anole lizard learned through experience that bright red insects are not its food. Thus, a learned behavior is one that an organism develops by encountering experience.
D It is a learned behavior that the lizard developed based on experience.