<span>Phytoplankton require sunlight because they generate energy though photosynthesis.
They do make tasty snacks for the passing aquatic organism, but not purposefully.</span>
Answer:
Ecosystems are closed systems
Explanation:
This answer (Ecosystems are closed systems) is false because ecosystems are open systems by nature.
<span>a meal in complex carbohydrates will digested by </span>amylase
Answer:
well it's not really alive it just makes bread rise
Explanation:
Explanation:
Sediment discharge was historically approximately 270 million cubic meters/year of suspended load and 130 million cubic meters/year of bedload. This has decreased 80% since 1850 and can be divided into three periods: historical period (pre 1900), pre-dam period (1932-1952), and post dam (1963-1982). Suspended sediment loads declined 43% between the historical and pre-dam and 51% from pre-dam to post-dam periods. The size of sediment also decreased drastically including a 72% decrease in the sand fraction. Most of this is due to dams on the tributaries acting as sediment traps primarily for the coarser sediments. Large-scale land clearing for agriculture contributed to increased sediment loads in the historic period.