Based on the chemical, physical and spatial heterogeneity of the soil as a habitat: What is the contribution of soil biota to the formation and stabilization of soil aggregates?

When is litter decomposition most favored by fungi or bacteria? Take into account the water / air ratio in the soil and the pH of the soil.

What is the role of biological nitrogen fixation and mycorrhiza for the availability of nitrogen and phosphorus in the soil, respectively?

What is the importance of the rhizosphere in the soil-plant system?

The construction of phylogenetic trees is a mapping out the proposed divisions and common ancestors of all living species. traditionally, these trees have been built using morphological data, such as appearance and embryology. recently, it has been possible to construct these trees using molecular data. phylogenetic trees based on different types of information agree with each: that there is strong evidence of a real underlying common descent. this phylogenic tree is composed based on molecular data (rrna). what statements can we infer are true about the organisms throughout the tree? because the tree is rooted, all branches share a common ancestor. all organisms have some sort of cellular structure/organization. all eukaryotes evolved from bacteria. since the organisms contain rna, they share the same dna. if the organisms contain rna, the share the same four nitrogen bases.

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. the following chemical equation shows the combustion of ethane. balance the equation by filling in the coefficients. c2h6 + o2 → co2 + h2o

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species