Review the chart, which shows the population sizes of three african animals in 1990 and in 2000. 1990 → 2000 lions . 100,000 .→ 47,000 cheetahs 50,000 → 7,500 zebras 15,000 → 2,500 which explanation is best supported by the numbers in the chart? a)lion and cheetah populations compete for the food source of zebras, and lions outcompete cheetahs. b)the dwindling zebra population has led to the decline of the predator lion and cheetah populations. c)overhunting of lion and cheetah populations has led to a decline in the food source population. d)lion and cheetah populations compete for the food source of zebras, and cheetahs outcompete lions.

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

Me brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula.5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects.8. describe the planets’ orbits around the sun.9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets.13. what causes the seasons?

Select the correct answer.what is the observable characteristic of a person called? o a. genotypephenotypeoc.alleleo d.gene