Photosynthesis • Oxygen binds readily with iron to form iron oxide, a dense compound that settles through
water to form sediments. Early oceans had large quantities of iron dissolved in their waters.
Explain how the composition of Earth's systems would change as more oxygen became
available due to photosynthetic cyanobacteria. Use evidence from your model to support
your explanation

Turtle hatchling survivorship rate is low in many turtle species due to predation. amanda researched the predatory rate on a species of turtle eggs in the red river. the eggs were harvested from trapped turtles and the egg's cloaca film (reproductive discharge) was either washed off or left on once gathered. research suggests that predators use the female's cloaca scent to locate the eggs. the eggs were only handled when wearing gloves and then reburied along islands where the turtles were trapped. the nests were monitored by cameras and manually on foot and data on nest predation were recorded. a. based on the experimental design, what is the dependent variable? b. based on the experimental design, what is the independent variable? c. based on the experimental design, what is the control?

What best describes the structure of the declaration of independence?

Where in the cell are ribosomes made?