Answer:
An asteroid impact.
Explanation:
An asteroid impact is considered to have tossed rubble across the earth, killing off many species of plants and animals, 65 million years ago. Volcanic activity is involved in at least four mass extinctions, whereas an asteroid in just one.
D. Producer, packager, distributer, retailer
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Answer:
Ribbon Snakes, American Water Snakes and European Grass Snakes
Explanation:
These are a few snakes thaat don't eat rodents, but eat fish.
The gradual evolution for the family Equidae (horse family) has been well documented within the fossil record.
Answer:
Have different numbers of neutrons
Explanation:
Isotopes of an element have different atomic numbers because thy differ in neutron number even though proton number remains the same across the isotopes. The mass number is the summation of the proton and neutron number. Phosphorus has approximately 23 isotopes whose mass number range between 25 and 47. Only ³¹P is stable.
