The acid growth theory states that the auxin-induced acidification of plant cell walls causes their expansion. A model now suggests that excessive acidification leads to growth inhibition ...

Wai'anapanapa State Park for the black sand beach and Ho'okipa Beach for its big waves are also popular stops. Since the trip will take visitors all day, snacks and a cooler with drinks are advised.

If you have extra time, Road to Hana is worthwhile. U.S. News Insider Tip: If you're driving yourself, there are several downloadable audio guides, such as those offered by Shaka Guide, that will ...

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Feb. 6, 2025 — A study has identified key genetic pathways in corn that help its roots branch out to find water in soil; the varieties adapted to temperate regions like the U.S. corn belt showed ...