Q: Bones are the main organs of what system, which also includes cartilage and ligaments? Choices: - lymphatic system - digestive system - endocrine system - skeletal system A:
skeletal system

(Question)
Q: What is the most abundant element in the universe? Choices: - carbon - helium - nitrogen - hydrogen A:
(Answer)
hydrogen

Ques: Q: What occurs after gametes fuse and form a diploid zygote? Choices: - transcription - electrolysis - reproduction - meiosis A:
Ans: meiosis

(Q).
Q: What is the attraction of a particular atom for the electrons of a covalent bond called? Choices: - conductivity - ionization - electromagnetism - electronegativity A:
(A).
electronegativity

Ques:Q: Which metalloids are found in the nitrogen group? Choices: - polonium and antimony - selenium and antimony - sulfur and polonium - arsenic and antimony A:

Ans:arsenic and antimony

Ques:Q: After an adaptive defense is produced against a pathogen, typically plasma cells first secrete immunoglobin, which constitutes about ten percent of all what? Choices: - parasites - hormones - allergies - antibodies A:

Ans:
antibodies