Most amphibians have glands in their skin that secrete mucous. This helps them
A: catch prey
B: absorb water
C: fight off bacterial infections
D: attract mates
A: catch prey
B: absorb water
C: fight off bacterial infections
D: attract mates
举一反三
- The most common cause of a cold is: A: Bacterial infections B: Too tired C: Catch cold D: Virus infection
- HSV-1 mainly causes skin and mucous membrane infections in the genital area
- Glands<br/>that secrete substances into the extracellular fluid that surrounds<br/>them are known as _____ glands. A: sweat B: exocrine C: endocrine D: sebaceous
- Endocrine glands secrete amino acids.
- According to the passage, why do many fishes stay in group ？（） A: It helps improve their safety. B: It allows them to swim faster. C: It helps them fight their predators. D: It allows them to avoid twists and turns.