Which phrase describes one characteristic of radioactive elements? What is the age of a meteorite if potassium-40 decayed from 80 g to 10 g? The half-life of potassium-40 is 1.3 billion years.

The mammal pictured below is a silvery mole rat. which statement is an inference based on the picture? the animal is ugly. the animal has hairless feet with sharp claws. the animal has prominent upper and lower incisor teeth. the animal likely has poor vision since its eyes are so small.

How does the carbon cycle involve an exchange of carbon

Describe the impact of deforestation of both abiotic and biotic factors within the tropical rainforest.