The diagram below shows fossils and rock features. Repelje bane
Clam
w
Broadleaf
N
Fern
How does intrusion X compare to the ages of the other rock layers and fossils in this geologic column?
A. Intrusion X is older than layers Y and Z.
B. Intrusion X is younger than all the layers.
C. Intrusion X is older than the clam and broadleaf fossils.

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla