SHOW ME HOW 3 Crossword

an ecological pyramid is a graphical representation designed to show the biomass or bioproductivity at each trophic level in a given ecosystem
the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community
a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically
anything that constrains a population’s size and slows it stops it from growing; usually expressed as a lack of a resource
materials or substances such as minerals, forests, water and fertile land that occur in nature and can be used for economic gain
a species living outside its native distributional range, but has been introduced by human activity
a scale used to specify how acidic or basic a water-based solution is
the process by which green plants use sunlight to synthesize foods from carbon dioxide and water
all the organisms of the same group or species, which live in a particular geographical area, and are capable of interbreeding
the change in the heritable characteristics of biological populations over successive generations. This is the expression of genes passed from parent to offspring during reproduction
the formation of a new or distinct species in the course of evolution
similar structures that evolved independently in two living organisms to serve the same purpose.
organs or skeletal elements that by their similarity, suggest their connection to a common ancestor. They do not have to look the same or have the same function
the branch of biology concerned with the study of embryos and their development
the process whereby organisms better adapted to their environment tend to survive and produce more offspring; the main process that brings about evolution
the natural or genetic ability of an organism to avoid or repel attach by biotic agents or withstand effects of abiotic agents
the decreased susceptibility of a pest population to a pesticide that was previously effective at controlling the pest
the process by which germs or organisms are able to withstand the intended effect if antibiotic medications.
a substance used to stimulate the production of antibodies and provide immunity against one or several diseases
a branching diagram showing the cladistics relationship between a number of species
also called an evolutionary tree, it is a branching diagram showing the evolutionary relationships among various biological species based on their similarities and difference in their physical or genetic characteristics