Ice float because it's a solid. A way to explain it to a child would be by saying it has bubbles in it so that's why it floats.
Answer:
B. a light bulb burned out and "closed" the circuit.
Explanation:
Unscrew one bulb. If the other bulbs turn off, it is a series circuit. A light bulb glows when electrons flow through it. As the electron flow increases, the brightness increases.
When lights are attached in parallel, each light is on its own circuit to the power source. If one filament burns out, it has no effect on the remaining lights, as they each continue to be in a closed circuit with the power source.
Options are not given in the question, so the complete question is as follows:
Scientists have a theory about the relationship between climate and biodiversity. Which best describes this theory?
A) Warmer climates promote higher biodiversity, allowing plants to grow year-round. This supports more organisms that rely on plants.
B) Colder climates promote higher biodiversity, reducing the competition among organisms for food. This supports stronger organisms that live longer.
C) Warmer climates promote higher biodiversity because they tend to receive more rainfall. This provides a source of water for more organisms.
D) Colder climates promote higher biodiversity because they are usually larger in size. This provides space for more organisms
Answer:
C)
Explanation:
Climate and biodiversity have a close relationship with each other.
The theory that best describes this relationship is that "Warmer climates are responsible for higher amount of rainfall and give rise to higher biodiversity and also provide a source of water for existing organisms."
Hence, the correct option is "C".
Answer:
Maize is monocot and fibrous roots whereas mustard is dicot and tap roots system.
Explanation:
The main difference between maize plant and mustard plants is that Maize is a monocot plant means only one cotyledon in their seed whereas Mustard are dicot which means having two cotyledons. Maize plant has a fibrous root system whereas mustard plant has tap root system. The leaves pf maize plant have parallel venation while on the other hand, the leaves of mustard having reticulate venation. The seeds of maize is bigger in size as compared mustard seed.
