What can the reader conclude about ecosystems based on the information in this passage? A. Ecosystems are always distinctly different and unique.
B. Ecosystems are interrelated with other ecosystems surrounding or including them.
C. Ecosystems are slow-developing entities of biological communities.
D. Ecosystems are clusters of communal habitats in an area.

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

i think it is true since you can test the answer and can use observations to complete it.