Enters the left atrium...this is the oxygenated blood from the lungs (pulmonary)
Its definitely not A, nor is it D because food webs and food chains can be either land or aquatic animals. i think its B because a food chain goes up and a food web includes more organisms
Answer:
sigma subunit
Explanation:
Sigma subunit of RNA polymerase holoenzyme directs the enzyme towards the consensus sequences present upstream of the transcription start site. Completion of the initiation phase of transcription is followed by dissociation of sigma subunit from the transcription complex.
The protein NusA replaces the sigma subunit. The RNA polymerase leaves the promoter and starts the elongation
.
The growth of plants and formation of land mammals characterized the paleozoic era.
Answer:
Non-disjunction of chromosomes.
Explanation:
2 sets of Chromosomes are supposed to be separated into each daughter gamete cells but non disjunction occurred that resulted in both sets of chromosomes being isolated into 1 gamete and the other having no chromosome
