B.centimeter
C. Megameter
D. Kilometer
Answer:
A.) meter
Explanation:
Answer;
Key
A sorting device that is useful in classifying by observation is a key.
Explanation;
Classification key or taxonomic key is a device that is used by scientists to identify unknown organisms.
They are constructed so that the user gets a series of choices about the characteristics of the unknown organisms.Thus, by making the correct choice at each step, one is led to the identity of the specimen.
Therefore, keys can be used to identify a living organism or determine which group it belongs to by answering questions on the key about characteristics of living things.
b. elevation
c. biome type
d. number of species
The air pressure in that section of Earth’s atmosphere increased.
The total number of gas particles in Earth’s atmosphere decreased.
The total number of gas particles in Earth’s atmosphere increased.
As altitude increases, temperature decreases. What is the relationship between atmospheric pressure and the density of gas particles in an area of decreasing pressure? As air pressure in an area decreases, the density of the gas particles in that area decreases.
The colour of the flowers is the variable in the above-mentioned experiment.
It is a method of performing cross-pollination where the transfer of the pollen grains from the anther of one flower of a plant to the stigma of another flower of a plant happens by the insects.
It is often called insect pollination. The flowers that are pollinated by insects have attractive petals of bright colours. This adaptation ensures that the insects will be attracted to the flowers.
The nectar present in these flowers, on which the insects feed is also sweet with an attractive scent. This is another factor which attracts the insects to the flowers.
It is by way of sucking the nectar that the insects also get pollen stuck on their mouth regions and legs. The pollen grains produced by these flowers are also sticky.
Therefore, to examine if monarchbutterflies prefer a specific coloured flower, different plants with different coloured flowers need to be used and the colour of the flowers will be the variable.
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