EkosiSTEMi Kopnenih Voda, EkosiSTEMi Mora

The statement is correct because it states that the starting point of the flowing water is the source, which is where underground water emerges. This implies that the initial part of the flowing water comes from underground sources.

Ekosistemi se mogu podeliti na vodene i kopnene ekosisteme u skladu sa njihovom životnom sredinom. Vodeni ekosistemi obuhvataju sve vodene površine kao što su okeani, mora, reke, jezera i močvare. Ovi ekosistemi su karakterisani prisustvom vode kao glavnog faktora koji utiče na njihovu biološku raznolikost i funkcionisanje. S druge strane, kopneni ekosistemi obuhvataju sve kopnene površine kao što su šume, livade, pustinje i planine. U ovim ekosistemima, zemlja je glavni faktor koji utiče na njihovu biološku raznolikost i funkcionisanje.

This statement is incorrect. The introduction of new species can disrupt the balance of certain ecosystems. When a new species is introduced, it can compete with native species for resources, alter food chains, and disrupt the natural interactions between organisms. This can lead to a decline in native species populations and potentially cause the extinction of certain species. Therefore, the introduction of new species can indeed disturb the equilibrium of ecosystems.

The statement states that the most diverse and richest marine life community is found at a depth of 50 meters. This means that at this specific depth, there is a higher concentration of different species and a greater abundance of marine life compared to other depths.

The diversity of the aquatic life in stagnant waters depends on the depth to which light penetrates. Light is an essential factor for the growth and survival of many organisms in these environments. It provides energy for photosynthesis, which is the primary source of food for many aquatic organisms. The availability of light at different depths determines the types and abundance of plant and algae species, which in turn influence the entire food chain and the overall biodiversity of the ecosystem.

The given statement is true. Alga kaulepra emits toxic substances that have a deadly effect on other algae and smaller marine organisms in the Mediterranean Sea.

The given question is asking to classify ecosystems of terrestrial waters into two categories: ecosystems of standing water and ecosystems of flowing water. The correct answer is "tekućih" which means "flowing" in English. This answer completes the sentence by providing the opposite category to ecosystems of standing water.

The term "trska" does not belong to the group because all the other terms are related to water or aquatic environments, while "trska" refers to a type of grass or reed that is commonly found in dry or marshy areas.

The term "morska kornjača" (sea turtle) does not belong to the group because all the other terms mentioned (pijavica, barska kornjača, vidra, and žaba) are types of animals that live in water or are associated with water habitats, while sea turtles live in the ocean.

The term "dagnja" does not belong to the group because it is the only one that does not refer to an animal. The other terms, "vidra" (otter), "zmija" (snake), "žaba" (frog), and "pijavica" (leech), all refer to different types of animals.

The given terms "trska," "rogoz," "šaš," and "sita" are all types of plants that are typically found near water, such as reeds, bulrushes, and sedge. However, "drezga" does not belong to this group as it is not a plant found near water.

The correct answer is lokvanj and vodeni orašak. These plants have leaves and flowers on long stems that float on the surface of the water, while their roots are anchored to the bottom. Sočivica, vodena paprat, and mešica do not have this characteristic.

The correct answer is sočivica and vodena paprat. These plants are able to freely float on the surface of the water without being anchored to the bottom because they have adaptations that allow them to do so. Sočivica, also known as duckweed, has small leaves that are buoyant and help it stay afloat. Vodena paprat, also known as water fern, has feathery leaves that provide buoyancy and enable it to float on the water's surface.