Which of the following actions should be taken first when determining how to fertilize turf in which the grass is proving unusually susceptible to diseases and pests? apply a high-nitrogen chemical fertilizer until grass shows signs of improvement

withhold fertilizer prior to testing soil for chemical balance

eliminate weeds prior to applying a 20-20-20 organic fertilizer

apply a top-dressing of organic compost to the mowed, dethatched, and aerated grass

i need an image of the diagram

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

producers within ecosystems are essential as they are at the base of the food chain. plants are examples of producers. they use the process of photosynthesis to capture light energy and use it to convert simple inorganic substances (carbon dioxide and water) into organic substances (glucose).