Does anyone know these two answers?

The nasal cavity is divided into left and right portions by the

blondinia [14]

Answer:

The correct answer will be- nasal septum

Explanation:

The nasal cavity is the hollow space or cavity connected to the two nostrils which allow the inhalation and exhalation of the air into the nose.

The nasal cavity is divided into left and right portion by a cartilaginous bony structure called nasal septum. The nasal septum lies in the central position and divides the nasal cavity into symmetrical portions.

Thus, the nasal septum is the correct answer.

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3 years ago

Why is nonpoint source pollution difficult to control?

bixtya [17]

Answer:

because it comes from the everyday activities of many different people, such as fertilizing a lawn, using a pesticide, or constructing a road or building.

Explanation:

6 0

3 years ago

In facilitated diffusion, __________ proteins provide openings in the plasma membrane for substances to flow through without cha

denpristay [2]

Answer: CHANNEL PROTEINS provide openings in the plasma membrane for substances to flow through without changing structure, and CARRIER PROTEINS allow passage of substances through the plasma membrane after undergoing a subtle change in shape.

Explanation: They are described thus:

A channel protein is a protein that allows the transport of specific substances across a cell membrane.

Carrier proteins are proteins that carry substances from one side of a biological membrane to the other. Many carrier proteins are found in a cell’s membrane, though they may also be found in the membranes of internal organelles such as the mitochondria, chloroplasts, nucleolus, and others.

7 0

3 years ago

A cross of a white horse(WW) and a red horse (RR) produces all Roan (RW) offspring. This type of inheritance is called:

BartSMP [9]

Answer d
multiple alleles

8 0

3 years ago

Read 2 more answers

The Mesozoic Era is marked by dramatic evolutionary activity. What factor best set the stage for the dramatic development of ins

Reptile [31]

Answer:

The era is characterized by having one of the most diverse environment that the earth could have ever seen, as there were number of species of dinosaurs and there were different plant life as well, and the climate was not so cold to live for the different organisms.
As, the life on earth flourish even there were organisms found on large scale inside the arctic circle.While, the level of CO₂ increased inside the Mesozoic era. Along , with which the extinction of about 96 percent of life made it very difficult for the rest of the organisms to survive and thus there were now mutations happening inside the different organisms genome.Along, with that the way of reproduction was greatly changed inside the plants, as more effective form of flowering plants were evolved.
As, for the animals new species with the increase level of survival instinct were evolved from old simple ones across the globe.

4 0

3 years ago