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Roman55 [17]
2 years ago
13

Name two strategies of human body defence system​

Biology
1 answer:
marshall27 [118]2 years ago
7 0

Answer:

You have external defense systems, which include your skin, tears, mucus, saliva, stomach acid, cilia (small hairs) and helpful bacteria. The skin, nails and hair form the integumentary system, which stops dirt and pathogens from entering the body.

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Write a list of three interesting scientific questions. Is each one testable?
Mrac [35]
Hi lovely! Here are your scientific questions that are testable: 

Does the type of liquid affect how fast an ice cube melts? 

Does changing the temperature of water affect the buoyancy of an egg?

Does the thickness of the wire affect the power of the circuit?


Hope I helped!
7 0
3 years ago
In a maternity ward, four babies become accidentally mixed up. The ABO blood types of the four babies are known to be. Baby Jane
nydimaria [60]

Answer:

See explanation

Explanation:

We inherit our blood groups from both parents. Our blood type is controlled by a single gene. This gene displays 3 different allelic pairs which must include A, B or O.  A child is expected to receive one of the three possible allelic pairs from each of the both parents. This means that there are six possible genotype and four possible phenotype for the child.

Given that Christopher's parents (Andersons) are AB and O,Christopher can have a B blood group.

Given that John's parents (Browns) are A and O, it explains how John can have blood group A.

Given that The Christiansons are A and AB, they can give birth to Robin whose blood group is AB.

Since the Dietrichs are O and O, the only possible blood group of their child is O, hence they are definitely the parents of Jane.

7 0
3 years ago
How do changes in nutrient affect biodivesity
lord [1]
Climate effects and human impacts, that is, nutrient enrichment, simultaneously drive spatial biodiversity patterns. However, there is little consensus about their independent effects on biodiversity. ... Species turnover rates caused by nutrients do not increase toward higher temperatures
5 0
2 years ago
Enchanted Rock State Natural Area is located in Central Texas. Enchanted Rock is a dome of granite. The area contains four easil
pav-90 [236]

Answer:

D) Granite rock

Explanation:

Enchanted Rock is a dome of granite, so you would pick this answer choice.

I am joyous to assist you anytime.

8 0
3 years ago
All of the following are stops on the pathway of taste signals except __________.
Troyanec [42]

B. The prefrontal cortex is used to plan complex cognitive behavior, personality expresison, and moderate social behavior.

8 0
2 years ago
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