1 Public international law, which governs the relationship between states and international entities. 2  It includes these legal fields: treaty law, law of sea, international criminal law, the laws of war or international humanitarian law, international human rights law, and refugee law. Private international law, or conflict of laws, which addresses the questions of (1) which jurisdiction may hear a case, and (2) the law concerning which jurisdiction applies to the issues in the case.
Protists live in almost any environment that contains liquid water. Many protists, such as algae, are photosynthetic and are vital primary producers in ecosystems, particularly in the ocean as part of the plankton.ost eukaryotic algae are autotrophic, but the pigments were lost in some groups. Other protists are heterotrophic, and may present phagotrophy, osmotrophy, saprotrophy or parasitism. Some are mixotrophic. Many protists are flagellate, for example, and filter feeding can take place where the flagella find prey.
Blue-green algae make up the division Cyanophyta in the kingdom Monera, which is made up of about 1,500 species of prokaryotic organisms. There is disagreement on whether or not this division should be considered algae or bacteria. Cyanobacteria (Blue Green Algae) differ from other types of bacteria in that they have chlorophyll a, which other photosynthetic bacteria donât have. Another characteristic that supports the algae argument is the fact that free oxygen is given off in blue-green algae photosynthesis but it is not given off in the photosynthesis of other bacteria. Many bacteria split H 2 S instead of H 2 O as a source of electrons during their photosynthesis; this is why they donât produce free O 2.