Why are environmentalists concerned about the introduction of genetically engineered trees? a. genetically engineered trees are not regulated. b. genetically engineered trees could have unexpected interactions with organisms of natural ecosystems. c. genetically engineered trees decrease the biodiversity of natural ecosystems. d. all of the above select the best answer from the choices provided

The deserts of the sahara and australia are associated with

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.

What organelle other than the nucleus houses dna in a eukaryotic cell?