*Question*
Biomass is the total mass of organisms at a trophic level, and herbivores are the second trophic level and graze on plants. Given these facts, biomass is the total mass of organisms on a level such as what among the following options: - Energy - trees - Energy. - bottom of feet - herbivores - kinetic energy - animals - energy usage
**Answer**
herbivores

*Question*
The color of leaves on deciduous trees usually changes in the autumn season, and deciduous trees are Oak, Elm, Ash, Maple, and Birch. Given these facts, what usually changes in the autumn season among the following options: - Something that can be auburn - looseness of dirt or compost - the looseness of soil - the color of leaves on oaks - a hemisphere is tilted away from the sun - Warm air moving into cold air - the male sex cells of plants - The bending of a ray of light
**Answer**
the color of leaves on oaks

*Question*
Temperature falls from lower to higher altitudes, and temperature values are in degrees celsius. Given these facts, what falls from lower to higher altitudes among the following options: - gravity - colder and wetter - water vapor - kinetic energy - density - degrees Celsius - heat energy - altitude
**Answer**
degrees Celsius

*Question*
Amutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring, and an adaptive trait helps an organism survive in a particular environment. Given these facts, what can a mutation in the sex cells of a parent do to the offspring among the following options: - population movement - genetic diversity - duplicate itself - Change colors - Plants growth - hyperthyroidism - Help it survive - kill them
**Answer**
Help it survive