This answer should be A !
Answer:
Plant A is the control group.
Explanation:
Because it isn't being tested on, its the base for the experiment, something to compare the plants being tested on too.
Answer:
Calcitonin stimulates the kidneys to absorb calcium when calcium levels are too low, while parathyroid hormone stimulates the kidneys to excrete calcium when calcium levels are too high.
Explanation:
Este tipo de ladrillo consiste en una botella de plástico empacada con elementos plásticos usados, limpios y secos para lograr que el bloque pueda utilizarse una y otra vez.
Los ecoladrillos son utilizados para fabricar muebles modulares, espacios de jardín, paredes, casas, centros comunitarios, etc.
