A cell in prophase I of meiosis has twice as much DNA as each of the daughter cells following cytokinesis of meiosis II.
Meiosis is reduction cell division through which gametes (eggs or sperm cells) are formed. Reduction division means that four haploid cells (n) are produced from a single diploid cell (2n). The number of chromosomes is reduced by half during meiosis but during fertilization are returned to the full numer, when the two gametes fuse.
When one organism eats another, the matter, or carbon, nitrogen, and other essential elements, are transferred from one to the other. These elements move from the producers, to the consumers, and eventually to the decomposers, cycling the matter through the ecosystem.
hope this helps ! :)
Bird skeletons are very delicate, and therefore, difficult to be preserved. The bones of the birds are soft. The small animals are very prone to physicochemical as well as biological decay. This is why the fossil record of bird is incomplete and well-preserved fossils of birds are rare to find, except at a few unusual sites.
Answer:
Warm air rises on land and moves toward the ocean to cool
Cool air moves from the ocean to be warmed by the land
Explanation:
The land heats up faster than the oceans during the day. This is because water has a high heat capacity and takes more energy to raise its temperatures by one degree (even in comparison to land). Therefore land heats up the air above it faster than the oceans. The air mass over land rises due to drop in density. The cooler and denser air mass above the oceans moves towards land to replace the rising warm air. This creates a cool breeze felt on land during the day as the cool air rushes in.
Answer: Biodiversity is the variety of life, which is responsible for ensuring the balance of ecosystems around the world. It provides necessary goods such as food or oxygen, it provides raw materials that favor economic development, it produces energy that we use as fuel, and it is the origin of some medicines. If all animals in an ecosystem were of the same species, the balance would be lost.
Explanation:
An ecosystem is a set of living beings (of different species) that share the same habitat or biotope. There are first of all primary producers, those that are capable of producing organic matter from inorganic compounds. These organisms are autotrophs, such as plants. Then we find in the second step the consumers, heterotrophic organisms (herbivores, carnivores or omnivores) that feed on matter and energy produced by other living beings. And in the last link of the trophic chain of organisms that make up an ecosystem we find the decomposers, those that feed on dead organic matter. In this way, there are complex interactions between different organisms of different species.
<u>Thus, biodiversity is the variety of life, which is responsible for ensuring the balance of ecosystems around the world. It provides necessary goods such as food or oxygen, it provides raw materials that favor economic development, it produces energy that we use as fuel, and it is the origin of some medicines.</u>
If all animals in an ecosystem were of the same species, the balance described above would be lost. If they were all producers like plants, there would be no consumers to control the plant population. If they were all consumers, they would eventually run out of food. And if they were all decomposers, they would not have enough dead organic matter to feed on either. A greater number of species or biological diversity in an ecosystem makes it more resilient. <u>Because species can absorb and reduce the effects of environmental changes on the overall structure of the ecosystem</u>. In addition, they can reduce the chances of a change to a different state.
