If the inner lining of the air sacs neither thin nor highly vascularized, then it can be inferred that AIR SACS ARE CANNOT BE THE SITES OF GASEOUS EXCHANGE BETWEEN AIR AND BLOOD. Air sacs are generally lined with mucus and surrounded with blood capillaries.
In case of birds, air sacs play an important role in respiratory system.

4 0

3 years ago

Which of the following is used to break things down and dispose of?

sammy [17]

Answer: Lysosomes

Explanation:

A lysosome is a membrane-bound cell organelle that contains digestive enzymes. ... They break down excess or worn-out cell parts.

8 0

3 years ago

What is the food chain in a bass pond

Vanyuwa [196]

The type of food chain that exists in a pond is called the grazing food chain. In a pond, the producers are phytoplankton like some algae and submerged plants found at the edges. The consumers have included zooplankton and the last decomposers are some bacteria, fungi, etc found at the bottom of the pond.

6 0

2 years ago

In the summer, laboratories can become hot and stuffy. Is it appropriate to wear flip-flops or sandals to lab to keep cooler?

ANEK [815]

No, incase a chemical spills on your foot.

8 0

3 years ago

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What elements are needed to carry out photosynthesis￼. Select all that apply￼

What elements are needed to carry out photosynthesis. Select all that apply