The answer is C. Pheromones are hormones (which are proteinous) produces by individuals of the same species and are a means to send communication signals for social interactions. They signal alarm, food and even sex. Sex pheromones are released by females beetles into the environment to signal their availability for mating. The pheromones are picked up by receptors on the male beetles and this is how they find the females.
Answer:
Line D
Explanation:
Traveling 40 Kilometers in 60 minutes compared to the others is the slowest.
Answer;
They have revealed new information about cell structure and processes.
Explanation;
-The Cell Theory states that, All living things are made up of cells, Cells are the basic units of structure and function in living things, and that new cells are produced from existing cells.
-Most microscopes use lenses to magnify the image of an object by focusing light or electrons.
-The Invention of the Microscope helped the development of the cell theory because it allowed the scientists to actually discover that everything was made up of cells, and what cells do to come up with that theory. If the scientists did not see that cells existed, they could not have observed the cells easily and they would not be able to construct the cell theory.
(A) they have revealed new information about cell structure and processes
False
B) strenuous exercise
C) playing video games
D) a diet high in carbohydrates
the answer is B for sure
B. notochord
C. pharyngeal slits
D. dorsal fin.
2. Ancient chordates are thought to be most closely related to which of the following species?
A. spiders
B. earthworms
C. octopi
D. sea stars
The notochord is a flexible, supporting structure found only in chordates. Ancient chordates are most closely related to octopi.
The correct answer for the first question is B. notochord. The notochord is a flexible, supporting structure found only in chordates.
It provides support to the body and serves as a precursor to the vertebral column in vertebrates. Examples of chordates include fish, birds, and mammals.
The correct answer for the second question is C. octopi. Ancient chordates are thought to be most closely related to cephalopods like octopi.
Both groups share certain characteristics in their body structure and development.
Learn more about chordates here:
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