Q5.2. A company is growing algae in big tanks to make fish food. However, the algae are not growing very quickly, and they suspect either phosphorus, nitrogen, or iron is limiting. What
could the company do to figure out which nutrient is limiting?

Add phosphorus to one tank, nitrogen to another, and iron to a third, and see which treatment
increases algal growth.

Add phosphorus, iron, and nitrogen to all tanks, and see which nutrient increases algal growth.

Add phosphorus to all tanks, because phosphorus is the nutrient that limits algal growth.

Add nitrogen to all tanks, because nitrogen is the nutrient that limits algal growth.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

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.

wild parsnip is a perennial plant which reproduces rapidly in areas which have no sign of agricultural activity such roadside or at no tillage open areas. it's considered invasive because it can inhibit the growth of another plant  and its reproduction is fast. there are several harmful effects of this invasive plant although its taproot is edible since it is a member of the carrot family. wild parsnips can cause skin blistering when in contact because of the chemicals it contains, second it inhibits the growth of other plants, it will restrict the growth of animals when eaten and lastly, it drives away natural pollinators like bees.