Diatoms have cell walls composed of
a. silicon dioxide
b. carbon dioxide
c. chiti...
Biology, 18.09.2019 17:00, mmcdaniels46867
Diatoms have cell walls composed of
a. silicon dioxide
b. carbon dioxide
c. chitin
Answers: 1
Biology, 22.06.2019 06:30, Aliyahh5673
Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food
Answers: 1
Biology, 22.06.2019 09:00, sidneydominguez2323
Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.
Answers: 3
Biology, 22.06.2019 11:00, anitadefrances
Match the following terms and definitions. 1. species that are adapted to live in equilibrium at carrying capacity population density 2. population growth that reaches equilibrium and carrying capacity population 3. death rate mortality 4. birth rate k-selected 5. a group of interacting individuals of the same species within the same geographic area natality 6. the number of organisms living in a particular area logistic growth
Answers: 1
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