20 points 5.34 regions on Earth called biodiversity hotspots contain 50% of the worlds plants and 42% of the worlds vertebrate animals. What are the 2 criteria that are used to determine if an area is a biodiversity hotspot? Ex. Gallapagos Islands, Madagascar, Central/Meso America, California coast, Hawaii, Puerto Rico and other regions. a. it must have 500 endemic species of plants and lost 50% of its habitat .b. it must have 1000 endemic species of plants and lost 25% of its habitat
.b. it must have 2000 endemic species of plants and lost 90% of its habitat O d..b. it must have 1500 endemic species of plants and lost 70% of its habitat O e.
b. it must have 2500 endemic species of plants and lost 40% of its habitat

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

Anita thinks that she has heterozygous alleles for red hair.if she is correct, which of these diagrams best illustrates anitas alleles pf red hair

Which part of cellular respiration must occur before any of the other steps can occur