How do materials enter and leave the nucleus? Nuclear pores, small channels that span the nuclear envelope, let substances enter and exit the nucleus. Each pore is lined by a set of proteins, called the nuclear pore complex, that control what molecules can go in or out.
Answer:
A) In this wild mustard, there is enough heritable variation to permit these different varieties
Explanation:
The mentioned varieties were created by artificial selection for various traits in the wild mustard Brassica. This wild type plant was native to Europe and Asia and had a wild range of genetic variations to allow the development of different strains.
For example, the selection of strains that formed the overlapping leaves led to the development of cabbage. Repeated breeding allowed this trait to become prominent as it is in the modern cabbages. Likewise, the strains of the wild cabbage that had prominent storage stem gave rise to kohlrabi while the strains with enlarged axillary buds were selected for the development of brussels sprouts.
Weather is the day-to-day state of the atmosphere, and its short-term variation in minutes to weeks. People generally think of weather as the combination of temperature, humidity, precipitation, cloudiness, visibility, and wind. ... Climate is the weather of a place averaged over a period of time, often 30 years.
Answer:
Hydras
Explanation:
Algae support hydras because they provide hydras oxygen. Hydras have regenerative ability; they do not appear to die of old age, or to age at all. But sometimes, disease, predators and water contamination kill off hydras before they can achieve "immortality".
Jellyfish need to stay in the water to survive. They get their oxygen from their really thin skin. In some cases, it has been found that jellyfish have an immune system that presents bacterial-specific responses.
In the absence of an adaptive immune system, Hydra polyps employ an elaborate innate immune system to detect and interact with microbes using their two cell layers as efficient defense barriers, making them survive longer or have better defense against the chemicals.
Also take into consideration, what chemicals/acids are being put into the lake and the "age" of the hydra/jellyfish.
