Answer:
Frogs lay eggs in water, and the eggs hatch into tadpoles that grow into frogs. ... All frogs reproduce sexually, and all hatch from eggs. In almost all frogs, egg fertilization happens outside the female's body instead of inside. The female releases her eggs and the male releases his sperm at the same time.
Answer:
A mutation near the middle of a gene changes the DNA to the following nucleotides: ATT. What kind of mutation occurred in this situation?
missense mutation
Explanation:
Polar bears are listed in red as they are belong to Endangered Species. These species are gonna extincting due to gradual changes by environmental factors.
Answer:
By running them under water. The water will separate the rocks from the dirt.
The type of organisms that take energy by eating up other organisms in an ecosystem are called 'CONSUMERS'. Now these consumers are further divided into three major classes:
1. Primary consumers: this type of consumers feed directly from the producers (plants) and they only eat grass, leaves, vegetables, etc. Such animals are also called herbivores. Example: rabbit
2. Secondary consumers: these are the animals that eat up primary consumers (animals that feed only on plants). These animals are called carnivores. Example: snake
3. Tertiary consumers: animals that eat carnivores which eats a herbivore are called tertiary consumers. They can be completely carnivore or omnivore (who feed on animals and plants both). Example: humans (they feed on animals and plants both)
