A student receives a picture of a savanna ecosystem with an elephant, a tree, and grass shown. How are gases exchanged among the three organisms present in the ecosystem?
The grass and the tree produce carbon dioxide for use by the elephant, and the elephant exhales oxygen for use by the grass and the tree.
O The grass and the tree produce oxygen for use by the elephant, and the elephant exhales nitrogen for use by the grass and the tree.
The grass and the tree produce nitrogen for use by the elephant, and the elephant exhales carbon dioxide for use by the grass and the tree
The grass and the tree produce oxygen for use by the elephant, and the elephant exhales carbon dioxide for use by the grass and the tree.

What field of science did harry hess study?

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?

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.