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Questions in biology

[Homework Help] Assertion (A): Farmers sometimes burn stubble in the fields after harvest. Reason (R): Burning stubble is the best way to increase nitrogen content in the soil. (1) Both A and R are true, and R is the correct explanation (2) Both A and R are true, but R is not the correct explanation (3) A is true, R is false (4) A is false, R is true

[Homework Help] How do limiting factors most affect population size? A. stop population growth B. restrict population growth C. increase population growth D. decrease population growth

[Homework Help] Which phrase describes short-term environmental changes? A. occur over thousands to millions of years B. occur over minutes to hundreds of years C. have little to no impact on organisms D. are slow-building and offer advanced warning

[Homework Help] The supporting cells of capillaries are called:

[Homework Help] When listing the levels of organization in organisms from least complex to most complex, which level is just below organs in complexity? A. cell B. organism C. organ system D. tissue

[Homework Help] What is the main benefit of aeroponics? A. Higher water usage B. Maximum oxygen exposure to roots C. No need for nutrients D. Slower growth rate

[Homework Help] Select the correctly matched phylum with their character: * Mollusca - Body has head, thorax, and abdomen * Echinodermata - Calcareous spicules * Annelida - Eucoelom * Hemichordata - Proboscis gland for respiration

[Homework Help] As a result of the reintroduction of wolves to Yellowstone Park and Idaho, which species' population is affected? A. bald eagles B. aspens C. elk D. beavers

[Homework Help] Creativity and imagination are what sets humans apart from all other animals. True or False

[Homework Help] Tick (✔) the correct option: 1. Terrestrial animals live on/in (i) land (ii) water (iii) air