BIOLOGY HIGH SCHOOL

What are traces or remains of organisms that lived in the past? A. adaptations
B. mutations
C. traits
D. fossils

Answers

Answer 1
Answer: The correct answer is D.) Fossils.

My reason being is because we have prove that dinosaurs existed , we got that proof from fossils.

I really hope that this helps.
Answer 2
Answer:

Answer: Fossils

Explanation:

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Which bone is used for writing​

Answers

There is no specific bone used for only writing purposes however the tiny bones present in the fingers allow for the grip on the pen to be tight

Which of the following is an example of how enzymes are catalyst?a)Enzymes can alter the free energy change (ΔG) for a chemical reaction.

b)Enzymes increase the free energy of the reactants to make the reaction go faster.

c)Enzymes provide the activation energy for the reactions they facilitate.

d)Enzymes lower the activation energy so that reactants absorb enough energy to reach transition state.

Answers

It’s D girlyyyyyyyyyyy

Which is an example of positive gravitropism?a. the plant shoot growing up out of the soil
b. the plant flower opening with the sunrise
c. the plant root growing down into the soil
d. the plant turning towards the sun

Answers

Answer:

c. the plant root growing down into the soil

Explanation:

The plant root going down deep into the soil is an example of positive gravitropism. Gravity pulls everything towards the center of earth i.e. downwards and roots follow the direction of gravity automatically by growing downward towards soil that is why it is known as positive gravitropism. In short we can say that root favors the direction of gravity.

Shoot on the other hand show negative geotropism/gravitropism i.e. it grows towards the opposite direction of gravity. Shoot grow towards upside direction i.e. away from the surface towards sky.

Identify two spiders in united states whose bites are most poisonous

Answers

The two spiders in United States that are poisonous: Black widow (southern and western) prefer staying hidden in sheds, garages or piles of debris. The female's bite is most dangerous. The venom of these spiders is very potent.
Brown recluse (southern and mid western states) range in color from cream to very dark brown; have six eyes; are known to occasionally bite humans, injecting their poisonous venom into the blood stream.

A person with blood group A produces antibodies againstb. A person with blood group B produces antibodies against
a. A person with blood group AB produces no antibodies. How can you explain this?

Answers


This is simply a protective mechanism of the body. A person with blood group A will produced antibodies against  blood group B because  group B cells are considered foreign bodies to the person and will not be tolerated and vice versa. Group B people have antibodies against group A and will not tolerate group A cells. This is why group A person can only be transfused with group A blood or group O blood. Both A and B   have no antibodies against blood group O. Indeed no blood group has antibodies against Blood group and this  is why people with blood group O are called universal donors.

Group AB people do not have antibodies against any blood group because both these groups are part and parcel of their body and production of antibodies against either A or B would end up in self destruction of the body. Group AB  people are known as universal recipients because they can receive blood from any of the other groups.

Are may beetles dangerous?Are May Beetles are dangerous?
Do they lay eggs on their back?
Are they a good pet?
Why or Why Not?

Answers

No
No
No
they are insects, and insects are bad pets because they have no soul, and so can't feel love
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