The equation that has a constant proportionality equal to 4 is : D. 3y = 12x
3y = 12x
y = 12x / 3
y = 4x
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Stomata allow for gas exchange on a leaf.
xylem and phloem are tissues that transport water and food throughout the plant.
pollen tubes transport the sperm to the egg.
Answer:changes in environmental conditions
Explanation: The kingdom protista includes algae with chlorophyll and are autotrophic in nutrition.They may be Unicellular or multicelllular.some are colonial and others are filamentuous.some protista undergoes both sexual and asexual reproduction eg chlamydomonas and ulothrix.
In asexual reproduction,the cell divides by mitosis;first in the nucleus and chloroplast and later in the cytoplasm.
sexual reproduction occurs when conditions are quite unfavourable.This is essential because recombination of genes occurs during sexual reproduction ,thus leading to genetic variation.the zygote formed may remain in a dormant state until conditions becomes favourable
The nuts and bolts osmt a chemical reaction bc nothing is haveinfg a reaction but yes to pastries because as you put them in a oven the rise and turn golden which is a chemical reaction
