Which of the following statements about the benthic realm is true?
a. The benthic realm is rich in nutrients, and it houses many sponges, fungi, and sea stars.
b. The benthic realm has a very high oxygen content, but it lacks photosynthetic organisms.
c. The benthic realm contains silt and is low in pressure, and it is the primary source for most fisheries.
d. The benthic realm is located closest to land, and it contains organisms that adapt to dry land.
a. The benthic realm is rich in nutrients, and it houses many sponges, fungi, and sea stars.
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Matching III. Choose the one most appropriate
answer for each. 1. ___ Australopithecus 2. ___ Homo erectus 3. ___ Homo sapiens 4. ___ Neandertals A. lived from approximately 200,000 to 30,000 years ago; stocky body adapted to colder climates B. lived about 1.9 million years ago until 53,000 years ago ; bipedal C. lived about 30 million years ago near Fayum D. modern humans since 195,000 years ago E. Lucy; lived about 3.2 million years ago
________ is the ingestion of large molecules and foreign substances through the phospholipid membrane
Fill in the blank(s) with correct word
The interval before the onset of DNA replication is
A) the G2 stage. B) all stages. C) the G1 stage. D) the M stage. E) the S stage.
Prokaryotic cells evolved about ________ years ago
Fill in the blank(s) with correct word