In the keystone predator simulation, the invasive european green crab replaced starfish as a keystone predator
a. true
b. false

True

Explanation:

A keystone predator is a one which plays a functional role in the community of living beings by feeding the considerably increasing prey population. Hence, maintains a balance in nature.

The european green crab is a invasive species, which acts as a keystone predator it fight with the native crab species for resources like food. Reduces the abundance of marine species specially the mollusks, crustaceans and the sellfish.

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

the scientific method.