If you have 2 plants, take wheat for example.
If there's one species who can produce lots of grain but takes a long time to grow, and there's a different species who produces very little grain but grows quickly, many farmers will try and get both of the good traits.
If they want fast-growing wheat with lots of grain, then they'll breed them together and hope that they get a species with both of the useful traits.
The same goes for animals. E.g, cows that are very big but don't produce much meat and a cow that's small but produces lots of meat in proportion.
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There are over 30 phyla dedicated to invertebrates. Major invertebrate phyla that you should know include porifera, cnidaria, platyhelminthes, nematoda, mollusca, annelida, arthropoda, and echinodermata
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Adaption is a gradual process of change or modifications of animal body either physically, structurally or behavioral changes in order to thrive and adjust better in the changing environment for survival.
Example is the adaptation by Polar bear. In the coolest arctic region, polar bear possesses long white furs with big sized paws and long hair. This help them to blend with white snowy color of environment and the big sized paws prevents them from slipping in ice and also could dig in the ice to take shelter is hostile weather like snowstorm. They have thick layers of fat beneath the skin that keeps them warm.
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The functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis.
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