What is the pericardial sac? what type of tissue makes up the sac?

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.

Matched chromosomes carrying information about the same characteristics in the organism are called

Wich is not standing in the way of astronomers getting a good view of different star