You and a friend are out hiking a mountain trail on a beautiful spring day. your friend’s hiking stick hits the side of a rock. the rock splits open to reveal the fossil of a fish. use what you learned in the lesson, about sedimentary rock, to explain the process that caused a fish from a lake or an ocean to end up as a fossil inside the rock you found on the mountain.

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

Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. this type of feedback mechanism best describes a positive or negative

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?