A lake that freeze over is helpful to the organisms inside the water because, the solid ice serves as a barrier between the water and the cold air above the water. The ice prevents the chilled air surrounding the water body from getting to the organisms inside the water. <span />
Flowering plants are the best of all plant bunches as far as their assorted variety. This gathering is typically alluded to as angiosperms on the grounds that, as their name infers, their seeds are encased in a carpel.
The angiosperms are vascular seed plants in which the ovule is prepared and forms into a seed in an encased empty ovary. The ovary itself is typically encased in a blossom, that piece of the angiospermous plant that contains the male or female conceptive organs or both.
Answer:
An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.
Explanation:
Meiosis produce cells with half the chromosomes, because a<span> gamete needs only half the number of chromosomes, because two gametes join together. </span>
Answer:
B, that is, nitrogen-fixing bacteria in the soil convert nitrogen from the air to make nitrates.
Explanation:
As we know, Nitrogen cycle hold alot of importance in earth's geology because it moves the Nitrogen from soil to the atmosphere and then back to the biosphere fulfilling the Nitrogen needs of animals as well as plants.
Just like all other biogeochemical cycles, there are different stages of Nitrogen cycle through which an interchange of nitrogen between different reservoirs occur.
The Nitrogen present in the atmosphere is not usable for the animals and plants. However, there are some bacteria present in the soil called nitrogen-fixing bacteria that convert the atmospheric nitrogen to a usable form called nitrates. Plants are able to use these Nitrates and fulfill their nitrogen demands as nitrogen is the main component of the chlorophyll - molecule that makes photosynthesis possible.
Therefore B is the appropriate option.
Hope it help!
