Answer:
Option C
Explanation:
Miller and Urey performed an experiment, using some inorganic molecules such as water, methane, carbon dioxide and hydrogen in laboratories conditions similar to early earth conditions .
Amino acids molecules formed as the result of this experiment, this proved that small organic molecules such as amino acids are formed from inorganic molecules.
Hence, the correct answer is option C
D :) try it at home or go to the forest and you will see tiny brown dots
<span>on the underside of some fern fronds - called sori. these contain big amount of spores.</span>
Explanation:
Carrying capacity is determined by limiting factors.
Carrying capacity is determined by limiting factors which affect the amount of resources available. Limiting factors may include water, space, nutrients, minerals, light, etc.If we're discussing carrying capacity in the context of a species, the number of available mates, predation, disease, or competition with another species could determine the species' carrying capacity. For example, a species of bird may have plenty of space and but if it needs to compete with another species for food, the degree and extent of competition will limit the population.
Or there may be plenty of available habitat, food, and water for tigers in India, but if there are only a few tigers breeding and producing offspring, the carrying capacity of the species will be determined by the number of females producing young.
Many of these same limiting factors apply when we refer to the carrying capacity of an ecosystem. For example, in a desert ecosystem, there may be plenty of available space, but the number of organisms the system can hold may depend on the amount of water.
Another ecosystem may be limited by nutrient-poor soil. If the soil in an area is low in nutrients, fewer photosynthetic plants will be able to grow, which means less food for organisms consuming the plants, which means less food for organisms that eat those organisms, and so forth. The nutrient concentration of the soil affects the carrying capacity of the entire ecosystem.
No.
This method of stating population density is carried out by counting the number of specimen in a given area and then dividing the number of specimen by that area. This does not mean that each specimen is one meter apart. Some regions may have no specimens for multiple meters while other regions may have multiple specimen in the same meter. The population density gives us an average value.
