Organic material provides nitrogen for plants. Which soil component contributes the most nitrogen to plants? Clay. Hummus. Sand. Salt.

15 points come and ! in which environment is someone least likely to find fungi growing? a around the sides of a hot tub b on a log in a tropical forest c beneath a mat in a shower d under a rock in the desert

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d.the size of the geographic area inhabited by a population can cause speciation.

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an