Wherever you look there is always a ecosystem. The organisms that are near your house are anything from trees, grass, flowers, etc. There is also dirt, it may look like nothing but there tiny microscopic organisms that live there. Insects are highly involved in an ecosystem, you got spiders, ants, bees, flies, worms and etc. Basically anything you can think of is in an ecosystem.
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Diffusion- spreading particles (ex: angel of perfume spreading throughout the room)
Active transport- movement of ions from a low concentration to a higher concentration.
Osmosis- movement of partials through a semi-permeable membrane from a less concentrated solution to a higher one.
Explanation:
Scientists have predicted that long-term effects of climate change will include a decrease in sea ice and an increase in permafrost thawing, an increase in heat waves and heavy precipitation, and decreased water resources in semi-arid regions.
Answer:
Angiosperms have seeds with an 3n endosperm due to double fertilization.
Explanation:
- Double fertilization is found only in flowering plants.
- In angiosperms, the female gametophyte does not grow after reaching eight nucleate stage.
- After fertilization and triple fusion, the zygote and primary endosperm are created and further growth of embryo sac continues.
- Triple fusion is the fusion of two haploid polar nuclei of female gametophyte and one male nuclei. This results in a 3n nucleus.
- The developing embryo obtains nutrition from the endosperm.
- If fertilization fails no endosperm is formed.
