Which phrase best describes a gene?

1.

a segment of a DNA molecule found only in the body cells of an organism
2.

a segment of a DNA molecule found only in the gametes of an organism
3.

a segment of a DNA molecule that contains the instructions for producing a trait in an organism
4.

a segment of a DNA molecule that contains the instructions for producing all the characteristics of an organism

In the african savanna, more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

Which of the following represents the correct format for the scientific name? a. staphylococcus aureusb. staphylococcus aureusc. staphylococcus aureusd. staphylococcus aureus

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?