two balls until they are out
Answer:
B. antibodies and antigens
Explanation:
Antibodies help the body to fight microbes or the toxins (poisons) they produce. They do this by recognising substances called antigens on the surface of the microbe, or in the chemicals they produce, which mark the microbe or toxin as being foreign. The antibodies then mark these antigens for destruction.
Answer:
The human muscular system is the machinery that drives athletic performance. Among their functions, the more than 600 skeletal muscles generate skilled movements and produce energy for sport-specific competition. ... These contractions pull on the bones of the skeleton to cause movement.
Explanation:
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Answer:
bacteria, viruses, fungi, and protozoa
Explanation:
Answer: The answer is D
Explanation:
Calories range within different food groups, so sometimes 100 may be too high or too low for an amount of food, not moderate.