Biogenic sediment is made up of at least 30 percent a) skeletal remains b) acidic chemicals c) alkeline properties d) limestone or rocks

A) skeletal remains

Biogenic sediment (Biogenic ooze) are formed directly or indirectly through biological activity and it is one of the most important constituents of marine sediments. Furthermore, they made from variety skeletal remains of marine zooplankton or phytoplankton. However, these sediments are made up of either siliceous ooze or carbonate ooze and skeletal remain in carbonate ooze is calcium carbonate.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.