Where would you expect to find green algae? Choose three answers.
A. in the shadow of a cactus
B. between the grasses in a marshy pond
C. in a dark hollow in a rainforest
D. in a shallow ocean lagoon

I would say the answers would be B, C and D.

Explanation:

They are common in areas where light is abundant and where there is plenty of water, such as shallow water and tide pools.

Although, with C, there isn't much water. However, rain forests are known to be fairly wet areas. For A, Cacti are commonly found in dry areas, so its unlikely that algae would be found near them. That's why C was chosen, as there would likely be more than enough water for the algae to grow.

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.