I'm almost certain that the answer would be X and Y
Hoped this helped!
Answer:
C is Wrong there was 1 billon people in 1804 A is Also Wrong B i also wrong so its D
Explanation: Can i have Brainliest
Answer:
Light directly influences plant growth and flowering by inducing photosynthesis and feeding plants energy. Plants are dependent on light to generate food, induce the growing cycle and allow for healthy development
Answer: 4
Explanation:
The pairing of the third (3') base of the mRNA codon and the first (5') base of the tRNA anticodon are less constrained by base stacking.
It is because of the different neurotransmitters and their receptors.
Sympathetic stimulation of arterioles in skeletal muscle is mediated by epinephrine acting on its β-adrenergic receptors.
Sympathetic stimulation of vasoconstriction occurs as a result of activation of α-1 adrenergic receptors by norepinephrine released by post-ganglionic sympathetic neurons.
