which animal can leave its eggs to hatch and does not need to take care of the infants? A ducks B sea turtles C frogs D penguins

Answers

Answer 1

Answer: the answer is B) sea turtles

Answer 2

Answer:

I took this quiz too, the answer its B.) Sea Turtles.

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If a scientist creates a new rock-like substance in a laboratory, why wouldn't this type of material be classified as a true mineral?Question 5 options:

A There are no planes of weakness in its lattice structure

B It's not a naturally occurring substance

C It's too new to be a mineral

D It would not be hard enough

Answers

B It's not a naturally occurring substance

Minerals are naturally occurring substances that form in geological processes. Since the scientist created this rock-like substance in a laboratory, it wouldn't be classified as a true mineral because it didn't occur naturally in the Earth's geological processes.

The reason why a new rock-like substance created in a laboratory would not be classified as a true mineral is because it does not meet one of the essential criteria for being considered a mineral: being a naturally occurring substance.

Minerals are formed naturally through geological processes over long periods of time. They are typically found in the Earth's crust or other natural environments. However, the substance created in a laboratory is artificially synthesized, meaning it is made by humans in a controlled setting rather than being formed naturally.

For example, if a scientist combines different chemical compounds in a lab and creates a rock-like substance, it may have similar physical properties to a mineral, such as hardness or color. However, since it was intentionally made by humans, it does not qualify as a true mineral.

Therefore, the correct answer is B: It's not a naturally occurring substance

What is a trait that is ancestral to all chordates? A. a jaw bone B. a notochord C. an amniotic egg D. a vertebral column

Answers

B. a notochord

Chordates are a phylum in the animal kingdom which have the following characteristics

Pharyngeal gill slit
dorsal nerve
notochord
post anal tail

These organisms possess these ancestral traits which have evolved to a more complex and sophisticated features that most animals have today.

B is the correct answer

Why are the cells produced by meiosis considered gametes?Can someone answer today it would mean a lot.

Answers

gametes are cells used to sexual reproduction. they are haploids and that means they have just one set of chromosomes (most of the cells of our body have 2 sets). that kind of cells is produced mainly by meiotic division of the gamete's stem cell (called oogonium or spermatogonium) and that's why meiosis usually leads to the production of gametes. gametes are haploids so that they could combine (egg with sperm cell) and create the whole new organism (adult organism is almost always diploid).

One of the major elements of natural selection is that all species have genetic A) digression. B) melanism. C) stability. D) variation.