Flatworms (Platyhelminthes) are phylum of unsegmented, soft, flat invertebrates.
Flatworms have no body cavity which is why they are flat. The advantage of a flat body is facilitated respiration and circulation. Flatworms do not have respiration and circulation system. But, oxygen diffuses across the skin and reach all parts of the body thanks to a flattened shape. Also, it is easy to hide from predators because they can get almost everywhere thanks to the body shape.
Ethylene is a plant hormone that is released in the form of gas. It stimulates plant cells degradation making the fruits softer and sweeter. As a result, high ethylene levels may cause fruits over-ripening and abscission.
Answer:
Charles Darwin had concluded that these birds had somehow evolved to adapt based on the island they were on. Each island had different food sources so if these finches wanted to survive they had to change. Each finch adapted to their environment due to forcefully evolving to survive.
Explanation:
Answer:
B.They hadn't turned the telescope toward the night sky.
Answer:
The question is incomplete but the complete question is attached in image format with options and the correct answer according to the data given in it is - option B. The optimum habitat for the golden-cheeked warbler population in 100 juniper trees per acre
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Explanation:
The provided data with the question helps to establish that the population interaction between a golden-cheeked warbler and the juniper tree are interdependent. The population of the warbler is increased with the increase in the population of juniper tree up to 100 juniper trees per acre.
The further increase in the population of the juniper tree affects negatively and there is a decrease in the population of the warblers.
Thus, the correct answer is - option B. The optimum habitat for the golden-cheeked warbler population in 100 juniper trees per acre
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