The ____ niche is the broadest role that an organism can potentially have in a community

a. realized
b. fundamental
c. displaced
d. excluded
e. limited


b

Biology & Microbiology

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Upon finding a carcass, a raven will only call and attract other ravens to the food source if the ____

a. nearby ravens are relatives b. food source is large and plentiful c. food is found in a resident pair's territory d. food is found in his own territory e. food is being consumed by an animal of another species

Biology & Microbiology

Describe the process of double fertilization in flowering plants

What will be an ideal response?

Biology & Microbiology

Answer the following statements true (T) or false (F)

1. The fossil record is often incomplete, in part because scientists will never be able to discover some of the fossils that are buried deep in the earth. 2. When ocean levels dropped about 70 million years ago, marsupial mammals moved into North America and displaced many of the placental mammal species. 3. Placental mammals give birth to more fully developed offspring than marsupial mammals and therefore have a greater chance of offspring survival. This helps to explain why placental mammals from North America displaced many native South American marsupial mammals when a land bridge formed between the two continents. 4. The common skeletal organization between two vertebrate animals, with bony limbs used for movement, is a example of analogous structures. 5. The techniques used to study molecular evolution are based on the comparison of nucleotide and amino acid sequences among species.

Biology & Microbiology

Plasmid DNA from humans has been successfully inserted and expressed in bacteria

Indicate whether the statement is true or false

Biology & Microbiology