Biology, 24.09.2020 22:01 emilybrown21304
Northern flickers (a kind of woodpecker) live on Santa Catalina Island in California. Let's say a population of 1000 flickers lives on the island. If over a 3-year period, the birth rate remains stable at 500 flickers per 1000 individuals per year and the death rate remains stable at 300 flickers per 1000 individuals per year, what would be the size of the population at the end of 3 years, assuming no migration to or from the island
Answers: 2
Biology, 21.06.2019 16:00, caitlin89
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
Answers: 2
Biology, 22.06.2019 11:00, hectorav6619
What happens during the experiment stage of the scientific method
Answers: 1
Biology, 22.06.2019 19:00, duncanje5783
Which of the following molecules could pass through the plasma membrane by simple diffusion? a. na+ ions b. glucose c. amino acids d. carbon dioxide
Answers: 1
Northern flickers (a kind of woodpecker) live on Santa Catalina Island in California. Let's say a po...
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