(Its actually Physical Science) To create a molecular model a student will use blue spheres to represent nitrogen (N) and white spheres to represent hydrogen (H). which option correctly describes a model of ammonia, NH3?

A. three blue spheres and three white spheres
B. one blue sphere and three white spheres
C. three blue spheres and one white sphere
D. one blue sphere and one white sphere​

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.

the answer is a) cell division.

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if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.