Earth scientists have concluded that he methods of hamesing energy that have been over the past two centuries such as burning of fossil fuels are causing climates around the world to change more quickly and suddenly than ever before

In a cladogram' when does a group of organisms branch off

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.

How do bacteria protect their genetic material and cytoplasm during harsh conditions