3 Complete these sentences using words in the box. You can use each word once, mole all
all.
There is
between the moving parts of machines. Friction causes the
This
friction
tempetre
Useful
of the machine to rise so energy is being wasted by
energy
energy is stored in the machine or the surroundings as
the
The amount of
between moving parts can be reduced by
machine

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?

In what for do plants utilize nitrogen? why do they need nitrogen?

How does natural selection change thephenotypes within a population over time?