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Can someone please help with question 23 (b) and (c). Not to sure about meiosis. http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2005exams/pdf_doc/biology_05.pdf Thanks in advance!

most pathogens must first be transmitted to and enter the human body before they trigger an immune response. relate this statement to a named infectious disease you have studied

Hey y'all! I know tis is probably stupid to ask, but can anyone give clear definitions of: • validity • reliability, and • accuracy. Also how to improve these within experiments? Thanks!

Can someone tell me what date bio is on?

Can someone Help with the key steps in the rise to power of the nazi party in 1923 and the impact of the great depression on Germany. It would be great help!

Outline the rationale behind choosing infinity as the point where objects in space have zero Ep

please help answer the following.

I really have no idea of how to do this at all haha, I'd really appreciate some help

I need help answering these questions please. 2.3.1 explain why arteries need thicker layers of elastic tissue and muscle fibres. 2.3.2 explain why it is incorrect to say that arteries carry oxygenated blood and veins carry oxygenated blood. Would be greatly appreciated!