Alocal area contains a stable desert biome. the
residents often use hiking trails through the dessert for
exercise. many of the residents complain about the
numerous cacti in the area, stating that their pets
often get too close they get cactus needles stuck on
their face causing injury. the residents have
suggested removing all the cacti from the area. the
city council is considering this and has consulted a
local ecologist who has constructed the food web
shown. which of the following statements correctly
identifies a concern the ecologist may have about the
proposed plan?
a. grasshoppers will no longer have a food source.
b. more of the available energy in the food web will
be lost metabolism.
c. the removal of producers will affect all other
trophic levels.
d. more grass will grow eliminating the desert
environment.

In eukaryotes, genetic information is passed to the next generation by processes that include mitosis or meiosis. which of the explanations identifies the correct process and supports the claim that heritable information is passed from one generation to another? a. mitosis, followed by cytokinesis, produces daughter cells that are genetically different from the parent cell, thus insuring variation within the population. b. during mitosis, dna replication occurs twice within the cell cycle to insure a full set of chromosomes within each of the daughter cells produced. c. in asexual reproduction, a single individual is the sole parent and passes copies of its genes to its offspring without the fusion of gametes. d. single-celled organisms can fuse their cells, reproducing asexually through mitosis to form new cells that are not identical to the parent cell.

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.