What were the first organisms to release oxygen into the atmosphere?

plants

animals

anaerobic photoautotrophs

cyanobacteria

2. Cheryl hears a new song on the radio every day during the week on her commute to work. Surprisingly, when the song comes on at a party on Saturday night, she knows most of the words without trying.

How many different types of covalent bonds can 2 carbon atoms form with one another

The height of a plant is dependent upon

The data in the table were recorded during an investigation in which a paramecium was placed in a hypertonic salt solution. A 2-column table labeled Paramecium Contractile Vacuole Contractions has 5 rows.

Sensory experiences that occur without a sensory stimulus are called

Hunters kill all of the wolves in a region. The wolves mostly ate deer. Why might there be fewer deer a few years after the wolves are killed?

Normal chlorophyll development in plants requires the presenceof at least one dominant allele at gene A and at least one dominantallele at gene B. Double homozygous recessive plants (a b / ab) lack chlorophyll and are white.

Onion cell and elodea cell

Two albino individuals marry and start a family. their first child has normal pigmentation. does this indicate infidelity and why/why not?

Which of these structures is/are NOT properly matched with one of its/their functions? a. pharyngeal tonsil: trap and destroy pathogens entering the nasopharynx in air b. paranasal sinuses: house olfactory receptors c.